74856401 has 4 divisors (see below), whose sum is σ = 75244452. Its totient is φ = 74468352.

The previous prime is 74856349. The next prime is 74856443. The reversal of 74856401 is 10465847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13249600 + 61606801 = 3640^2 + 7849^2 .

It is a cyclic number.

It is not a de Polignac number, because 74856401 - 2¹⁰ = 74855377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74856461) 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, 193736 + ... + 194121.

It is an arithmetic number, because the mean of its divisors is an integer number (18811113).

Almost surely, 2^74856401 is an apocalyptic number.

It is an amenable number.

74856401 is a deficient number, since it is larger than the sum of its proper divisors (388051).

74856401 is a wasteful number, since it uses less digits than its factorization.

74856401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388050.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 74856401 is about 8651.9593734599. The cubic root of 74856401 is about 421.4470138329.

It can be divided in two parts, 74856 and 401, that added together give a palindrome (75257).

The spelling of 74856401 in words is "seventy-four million, eight hundred fifty-six thousand, four hundred one".