5642564693 has 2 divisors, whose sum is σ = 5642564694. Its totient is φ = 5642564692.

The previous prime is 5642564657. The next prime is 5642564701. The reversal of 5642564693 is 3964652465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4599145489 + 1043419204 = 67817^2 + 32302^2 .

It is a cyclic number.

It is not a de Polignac number, because 5642564693 - 2²⁴ = 5625787477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5642564633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821282346 + 2821282347.

It is an arithmetic number, because the mean of its divisors is an integer number (2821282347).

Almost surely, 2^5642564693 is an apocalyptic number.

It is an amenable number.

5642564693 is a deficient number, since it is larger than the sum of its proper divisors (1).

5642564693 is an equidigital number, since it uses as much as digits as its factorization.

5642564693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 50.

The square root of 5642564693 is about 75117.0066829077. The cubic root of 5642564693 is about 1780.2958617958.

The spelling of 5642564693 in words is "five billion, six hundred forty-two million, five hundred sixty-four thousand, six hundred ninety-three".