64116457 has 2 divisors, whose sum is σ = 64116458. Its totient is φ = 64116456.

The previous prime is 64116439. The next prime is 64116461. The reversal of 64116457 is 75461146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64064016 + 52441 = 8004^2 + 229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64116457 is a prime.

It is a super-2 number, since 2×64116457² = 8221840116465698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64116427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32058228 + 32058229.

It is an arithmetic number, because the mean of its divisors is an integer number (32058229).

Almost surely, 2^64116457 is an apocalyptic number.

It is an amenable number.

64116457 is a deficient number, since it is larger than the sum of its proper divisors (1).

64116457 is an equidigital number, since it uses as much as digits as its factorization.

64116457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 64116457 is about 8007.2752544171. The cubic root of 64116457 is about 400.2424717389.

The spelling of 64116457 in words is "sixty-four million, one hundred sixteen thousand, four hundred fifty-seven".