74702057 has 4 divisors (see below), whose sum is σ = 77278020. Its totient is φ = 72126096.

The previous prime is 74702027. The next prime is 74702059. The reversal of 74702057 is 75020747.

It is a happy number.

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 53348416 + 21353641 = 7304^2 + 4621^2 .

It is a cyclic number.

It is not a de Polignac number, because 74702057 - 2⁶ = 74701993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74702059) 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, 1287938 + ... + 1287995.

It is an arithmetic number, because the mean of its divisors is an integer number (19319505).

Almost surely, 2^74702057 is an apocalyptic number.

It is an amenable number.

74702057 is a deficient number, since it is larger than the sum of its proper divisors (2575963).

74702057 is a wasteful number, since it uses less digits than its factorization.

74702057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575962.

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 74702057 is about 8643.0351729008. The cubic root of 74702057 is about 421.1571585234.

The spelling of 74702057 in words is "seventy-four million, seven hundred two thousand, fifty-seven".