642595593 has 16 divisors (see below), whose sum is σ = 873377856. Its totient is φ = 420161280.

The previous prime is 642595589. The next prime is 642595627. The reversal of 642595593 is 395595246.

It is a happy number.

It is not a de Polignac number, because 642595593 - 2² = 642595589 is a prime.

It is a super-2 number, since 2×642595593² = 825858192286043298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (642595693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39973 + ... + 53693.

It is an arithmetic number, because the mean of its divisors is an integer number (54586116).

Almost surely, 2^642595593 is an apocalyptic number.

It is an amenable number.

642595593 is a deficient number, since it is larger than the sum of its proper divisors (230782263).

642595593 is a wasteful number, since it uses less digits than its factorization.

642595593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14024.

The product of its digits is 1458000, while the sum is 48.

The square root of 642595593 is about 25349.4692843854. The cubic root of 642595593 is about 862.9373120283.

The spelling of 642595593 in words is "six hundred forty-two million, five hundred ninety-five thousand, five hundred ninety-three".