65970731 has 2 divisors, whose sum is σ = 65970732. Its totient is φ = 65970730.

The previous prime is 65970721. The next prime is 65970781. The reversal of 65970731 is 13707956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65970731 - 2²² = 61776427 is a prime.

It is a super-2 number, since 2×65970731² = 8704274697348722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65970701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32985365 + 32985366.

It is an arithmetic number, because the mean of its divisors is an integer number (32985366).

Almost surely, 2^65970731 is an apocalyptic number.

65970731 is a deficient number, since it is larger than the sum of its proper divisors (1).

65970731 is an equidigital number, since it uses as much as digits as its factorization.

65970731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 65970731 is about 8122.2368224523. The cubic root of 65970731 is about 404.0642543130.

The spelling of 65970731 in words is "sixty-five million, nine hundred seventy thousand, seven hundred thirty-one".