787740057 has 48 divisors (see below), whose sum is σ = 1302100800. Its totient is φ = 454896000.

The previous prime is 787740049. The next prime is 787740061. The reversal of 787740057 is 750047787.

It is a happy number.

It is not a de Polignac number, because 787740057 - 2³ = 787740049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 787739994 and 787740021.

It is not an unprimeable number, because it can be changed into a prime (787740757) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240682 + ... + 243932.

It is an arithmetic number, because the mean of its divisors is an integer number (27127100).

Almost surely, 2^787740057 is an apocalyptic number.

It is an amenable number.

787740057 is a deficient number, since it is larger than the sum of its proper divisors (514360743).

787740057 is a wasteful number, since it uses less digits than its factorization.

787740057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398 (or 3395 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 45.

The square root of 787740057 is about 28066.7072703586. The cubic root of 787740057 is about 923.5511995141.

The spelling of 787740057 in words is "seven hundred eighty-seven million, seven hundred forty thousand, fifty-seven".