77876481 has 4 divisors (see below), whose sum is σ = 103835312. Its totient is φ = 51917652.

The previous prime is 77876479. The next prime is 77876501. The reversal of 77876481 is 18467877.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 77876481 - 2¹ = 77876479 is a prime.

It is a super-2 number, since 2×77876481² = 12129492585886722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77876481.

It is not an unprimeable number, because it can be changed into a prime (77876471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12979411 + ... + 12979416.

It is an arithmetic number, because the mean of its divisors is an integer number (25958828).

Almost surely, 2^77876481 is an apocalyptic number.

It is an amenable number.

77876481 is a deficient number, since it is larger than the sum of its proper divisors (25958831).

77876481 is a wasteful number, since it uses less digits than its factorization.

77876481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25958830.

The product of its digits is 526848, while the sum is 48.

The square root of 77876481 is about 8824.7652093413. The cubic root of 77876481 is about 427.0402128907.

The spelling of 77876481 in words is "seventy-seven million, eight hundred seventy-six thousand, four hundred eighty-one".