65623607 has 16 divisors (see below), whose sum is σ = 79690560. Its totient is φ = 52835328.

The previous prime is 65623601. The next prime is 65623693. The reversal of 65623607 is 70632656.

It is not a de Polignac number, because 65623607 - 2²⁰ = 64575031 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 (65623601) 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, 3143 + ... + 11879.

It is an arithmetic number, because the mean of its divisors is an integer number (4980660).

Almost surely, 2^65623607 is an apocalyptic number.

65623607 is a deficient number, since it is larger than the sum of its proper divisors (14066953).

65623607 is a wasteful number, since it uses less digits than its factorization.

65623607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 65623607 is about 8100.8398947270. The cubic root of 65623607 is about 403.3543075099.

The spelling of 65623607 in words is "sixty-five million, six hundred twenty-three thousand, six hundred seven".