64008731 has 2 divisors, whose sum is σ = 64008732. Its totient is φ = 64008730.

The previous prime is 64008727. The next prime is 64008733. The reversal of 64008731 is 13780046.

64008731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64008731 - 2² = 64008727 is a prime.

It is a super-2 number, since 2×64008731² = 8194235288460722, which contains 22 as substring.

Together with 64008733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64008694 and 64008703.

It is not a weakly prime, because it can be changed into another prime (64008733) 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, 32004365 + 32004366.

It is an arithmetic number, because the mean of its divisors is an integer number (32004366).

Almost surely, 2^64008731 is an apocalyptic number.

64008731 is a deficient number, since it is larger than the sum of its proper divisors (1).

64008731 is an equidigital number, since it uses as much as digits as its factorization.

64008731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 64008731 is about 8000.5456688903. The cubic root of 64008731 is about 400.0181887562.

Adding to 64008731 its reverse (13780046), we get a palindrome (77788777).

The spelling of 64008731 in words is "sixty-four million, eight thousand, seven hundred thirty-one".