65220424 has 16 divisors (see below), whose sum is σ = 123477120. Its totient is φ = 32293200.

The previous prime is 65220401. The next prime is 65220437. The reversal of 65220424 is 42402256.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38752 + ... + 40399.

It is an arithmetic number, because the mean of its divisors is an integer number (7717320).

Almost surely, 2^65220424 is an apocalyptic number.

It is an amenable number.

65220424 is a deficient number, since it is larger than the sum of its proper divisors (58256696).

65220424 is a wasteful number, since it uses less digits than its factorization.

65220424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79260 (or 79256 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 65220424 is about 8075.9162947619. The cubic root of 65220424 is about 402.5265576654.

The spelling of 65220424 in words is "sixty-five million, two hundred twenty thousand, four hundred twenty-four".