64116931 has 2 divisors, whose sum is σ = 64116932. Its totient is φ = 64116930.

The previous prime is 64116929. The next prime is 64116937. The reversal of 64116931 is 13961146.

64116931 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 64116931 - 2¹ = 64116929 is a prime.

It is a super-2 number, since 2×64116931² = 8221961681717522, which contains 22 as substring.

Together with 64116929, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 64116893 and 64116902.

It is not a weakly prime, because it can be changed into another prime (64116937) 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, 32058465 + 32058466.

It is an arithmetic number, because the mean of its divisors is an integer number (32058466).

Almost surely, 2^64116931 is an apocalyptic number.

64116931 is a deficient number, since it is larger than the sum of its proper divisors (1).

64116931 is an equidigital number, since it uses as much as digits as its factorization.

64116931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 64116931 is about 8007.3048524457. The cubic root of 64116931 is about 400.2434580404.

The spelling of 64116931 in words is "sixty-four million, one hundred sixteen thousand, nine hundred thirty-one".