65745731 has 2 divisors, whose sum is σ = 65745732. Its totient is φ = 65745730.

The previous prime is 65745703. The next prime is 65745737. The reversal of 65745731 is 13754756.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65745731 is a prime.

It is a super-2 number, since 2×65745731² = 8645002289448722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65745737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32872865 + 32872866.

It is an arithmetic number, because the mean of its divisors is an integer number (32872866).

Almost surely, 2^65745731 is an apocalyptic number.

65745731 is a deficient number, since it is larger than the sum of its proper divisors (1).

65745731 is an equidigital number, since it uses as much as digits as its factorization.

65745731 is an odious number, because the sum of its binary digits is odd.

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

The square root of 65745731 is about 8108.3741280234. The cubic root of 65745731 is about 403.6043634399.

The spelling of 65745731 in words is "sixty-five million, seven hundred forty-five thousand, seven hundred thirty-one".