57820797 has 20 divisors (see below), whose sum is σ = 89164416. Its totient is φ = 37302120.

The previous prime is 57820787. The next prime is 57820817. The reversal of 57820797 is 79702875.

57820797 is a `hidden beast` number, since 578 + 2 + 0 + 79 + 7 = 666.

It is not a de Polignac number, because 57820797 - 2¹⁴ = 57804413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57820717) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9003 + ... + 14024.

Almost surely, 2^57820797 is an apocalyptic number.

It is an amenable number.

57820797 is a deficient number, since it is larger than the sum of its proper divisors (31343619).

57820797 is a wasteful number, since it uses less digits than its factorization.

57820797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23070 (or 23061 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 57820797 is about 7603.9987506574. The cubic root of 57820797 is about 386.6885902981.

The spelling of 57820797 in words is "fifty-seven million, eight hundred twenty thousand, seven hundred ninety-seven".