64766731 has 2 divisors, whose sum is σ = 64766732. Its totient is φ = 64766730.

The previous prime is 64766717. The next prime is 64766749. The reversal of 64766731 is 13766746.

64766731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64766731 - 2¹³ = 64758539 is a prime.

It is a super-2 number, since 2×64766731² = 8389458888852722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64766711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32383365 + 32383366.

It is an arithmetic number, because the mean of its divisors is an integer number (32383366).

Almost surely, 2^64766731 is an apocalyptic number.

64766731 is a deficient number, since it is larger than the sum of its proper divisors (1).

64766731 is an equidigital number, since it uses as much as digits as its factorization.

64766731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 40.

The square root of 64766731 is about 8047.7780163223. The cubic root of 64766731 is about 401.5910195019.

The spelling of 64766731 in words is "sixty-four million, seven hundred sixty-six thousand, seven hundred thirty-one".