64676831 has 2 divisors, whose sum is σ = 64676832. Its totient is φ = 64676830.

The previous prime is 64676813. The next prime is 64676849. The reversal of 64676831 is 13867646.

Together with previous prime (64676813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (64676813) and next prime (64676849).

It is a cyclic number.

It is not a de Polignac number, because 64676831 - 2⁶ = 64676767 is a prime.

It is a super-2 number, since 2×64676831² = 8366184936405122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64676861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32338415 + 32338416.

It is an arithmetic number, because the mean of its divisors is an integer number (32338416).

Almost surely, 2^64676831 is an apocalyptic number.

64676831 is a deficient number, since it is larger than the sum of its proper divisors (1).

64676831 is an equidigital number, since it uses as much as digits as its factorization.

64676831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 64676831 is about 8042.1906841358. The cubic root of 64676831 is about 401.4051228779.

It can be divided in two parts, 646 and 76831, that added together give a palindrome (77477).

The spelling of 64676831 in words is "sixty-four million, six hundred seventy-six thousand, eight hundred thirty-one".