747305057 has 8 divisors (see below), whose sum is σ = 792498816. Its totient is φ = 702248512.

The previous prime is 747305051. The next prime is 747305059. The reversal of 747305057 is 750503747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-747305057 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 747305057.

It is not an unprimeable number, because it can be changed into a prime (747305051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22973 + ... + 44970.

It is an arithmetic number, because the mean of its divisors is an integer number (99062352).

Almost surely, 2^747305057 is an apocalyptic number.

It is an amenable number.

747305057 is a deficient number, since it is larger than the sum of its proper divisors (45193759).

747305057 is a wasteful number, since it uses less digits than its factorization.

747305057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68607.

The product of its (nonzero) digits is 102900, while the sum is 38.

The square root of 747305057 is about 27336.8808937669. The cubic root of 747305057 is about 907.4707600614.

The spelling of 747305057 in words is "seven hundred forty-seven million, three hundred five thousand, fifty-seven".