65656893 has 4 divisors (see below), whose sum is σ = 87542528. Its totient is φ = 43771260.

The previous prime is 65656861. The next prime is 65656909. The reversal of 65656893 is 39865656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65656893 - 2⁵ = 65656861 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 (65652893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10942813 + ... + 10942818.

It is an arithmetic number, because the mean of its divisors is an integer number (21885632).

Almost surely, 2^65656893 is an apocalyptic number.

It is an amenable number.

65656893 is a deficient number, since it is larger than the sum of its proper divisors (21885635).

65656893 is a wasteful number, since it uses less digits than its factorization.

65656893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21885634.

The product of its digits is 1166400, while the sum is 48.

The square root of 65656893 is about 8102.8941125995. The cubic root of 65656893 is about 403.4224932474.

The spelling of 65656893 in words is "sixty-five million, six hundred fifty-six thousand, eight hundred ninety-three".