65747531 has 2 divisors, whose sum is σ = 65747532. Its totient is φ = 65747530.

The previous prime is 65747527. The next prime is 65747603. The reversal of 65747531 is 13574756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65747531 - 2² = 65747527 is a prime.

It is a super-2 number, since 2×65747531² = 8645475665191922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65747431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32873765 + 32873766.

It is an arithmetic number, because the mean of its divisors is an integer number (32873766).

Almost surely, 2^65747531 is an apocalyptic number.

65747531 is a deficient number, since it is larger than the sum of its proper divisors (1).

65747531 is an equidigital number, since it uses as much as digits as its factorization.

65747531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 38.

The square root of 65747531 is about 8108.4851236220. The cubic root of 65747531 is about 403.6080467271.

The spelling of 65747531 in words is "sixty-five million, seven hundred forty-seven thousand, five hundred thirty-one".