74704457 has 4 divisors (see below), whose sum is σ = 75014676. Its totient is φ = 74394240.

The previous prime is 74704439. The next prime is 74704489. The reversal of 74704457 is 75440747.

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 67634176 + 7070281 = 8224^2 + 2659^2 .

It is a cyclic number.

It is not a de Polignac number, because 74704457 - 2⁶ = 74704393 is a prime.

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 74704457.

It is not an unprimeable number, because it can be changed into a prime (74704417) 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, 154748 + ... + 155229.

It is an arithmetic number, because the mean of its divisors is an integer number (18753669).

Almost surely, 2^74704457 is an apocalyptic number.

It is an amenable number.

74704457 is a deficient number, since it is larger than the sum of its proper divisors (310219).

74704457 is a wasteful number, since it uses less digits than its factorization.

74704457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310218.

The product of its (nonzero) digits is 109760, while the sum is 38.

The square root of 74704457 is about 8643.1740119010. The cubic root of 74704457 is about 421.1616687355.

The spelling of 74704457 in words is "seventy-four million, seven hundred four thousand, four hundred fifty-seven".