77401476 has 36 divisors (see below), whose sum is σ = 207164412. Its totient is φ = 24282624.

The previous prime is 77401453. The next prime is 77401483. The reversal of 77401476 is 67410477.

It can be written as a sum of positive squares in 2 ways, for example, as 33524100 + 43877376 = 5790^2 + 6624^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 77401476.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62625 + ... + 63848.

It is an arithmetic number, because the mean of its divisors is an integer number (5754567).

Almost surely, 2^77401476 is an apocalyptic number.

It is an amenable number.

77401476 is an abundant number, since it is smaller than the sum of its proper divisors (129762936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77401476 is a wasteful number, since it uses less digits than its factorization.

77401476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126500 (or 126495 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 77401476 is about 8797.8108640729. The cubic root of 77401476 is about 426.1702024379.

Subtracting from 77401476 its reverse (67410477), we obtain a palindrome (9990999).

It can be divided in two parts, 77401 and 476, that added together give a palindrome (77877).

The spelling of 77401476 in words is "seventy-seven million, four hundred one thousand, four hundred seventy-six".