65213972 has 24 divisors (see below), whose sum is σ = 123653376. Its totient is φ = 29973888.

The previous prime is 65213971. The next prime is 65213977. The reversal of 65213972 is 27931256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65213971) 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, 8228 + ... + 14075.

It is an arithmetic number, because the mean of its divisors is an integer number (5152224).

Almost surely, 2^65213972 is an apocalyptic number.

It is an amenable number.

65213972 is a deficient number, since it is larger than the sum of its proper divisors (58439404).

65213972 is a wasteful number, since it uses less digits than its factorization.

65213972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22367 (or 22365 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 65213972 is about 8075.5168255660. The cubic root of 65213972 is about 402.5132837713.

The spelling of 65213972 in words is "sixty-five million, two hundred thirteen thousand, nine hundred seventy-two".