65573916 has 24 divisors (see below), whose sum is σ = 157142160. Its totient is φ = 21267072.

The previous prime is 65573909. The next prime is 65573917. The reversal of 65573916 is 61937556.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65573917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73401 + ... + 74288.

It is an arithmetic number, because the mean of its divisors is an integer number (6547590).

Almost surely, 2^65573916 is an apocalyptic number.

It is an amenable number.

65573916 is an abundant number, since it is smaller than the sum of its proper divisors (91568244).

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

65573916 is a wasteful number, since it uses less digits than its factorization.

65573916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147733 (or 147731 counting only the distinct ones).

The product of its digits is 170100, while the sum is 42.

The square root of 65573916 is about 8097.7722862526. The cubic root of 65573916 is about 403.2524735262.

The spelling of 65573916 in words is "sixty-five million, five hundred seventy-three thousand, nine hundred sixteen".