20056797 has 6 divisors (see below), whose sum is σ = 28970942. Its totient is φ = 13371192.

The previous prime is 20056793. The next prime is 20056807. The reversal of 20056797 is 79765002.

20056797 is a `hidden beast` number, since 2 + 0 + 0 + 567 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17214201 + 2842596 = 4149^2 + 1686^2 .

It is not a de Polignac number, because 20056797 - 2² = 20056793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20056793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1114258 + ... + 1114275.

Almost surely, 2^20056797 is an apocalyptic number.

It is an amenable number.

20056797 is a deficient number, since it is larger than the sum of its proper divisors (8914145).

20056797 is a wasteful number, since it uses less digits than its factorization.

20056797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228539 (or 2228536 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 20056797 is about 4478.4815507044. The cubic root of 20056797 is about 271.6984701038.

The spelling of 20056797 in words is "twenty million, fifty-six thousand, seven hundred ninety-seven".