65673564 has 48 divisors (see below), whose sum is σ = 167650560. Its totient is φ = 19843840.

The previous prime is 65673551. The next prime is 65673577. The reversal of 65673564 is 46537656.

It is an interprime number because it is at equal distance from previous prime (65673551) and next prime (65673577).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77857 + ... + 78695.

It is an arithmetic number, because the mean of its divisors is an integer number (3492720).

Almost surely, 2^65673564 is an apocalyptic number.

It is an amenable number.

65673564 is an abundant number, since it is smaller than the sum of its proper divisors (101976996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65673564 is a wasteful number, since it uses less digits than its factorization.

65673564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450 (or 1448 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 65673564 is about 8103.9227538273. The cubic root of 65673564 is about 403.4566348124.

The spelling of 65673564 in words is "sixty-five million, six hundred seventy-three thousand, five hundred sixty-four".