64117477 has 2 divisors, whose sum is σ = 64117478. Its totient is φ = 64117476.

The previous prime is 64117453. The next prime is 64117511. The reversal of 64117477 is 77471146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53450721 + 10666756 = 7311^2 + 3266^2 .

It is a cyclic number.

It is not a de Polignac number, because 64117477 - 2⁷ = 64117349 is a prime.

It is a super-2 number, since 2×64117477² = 8222101713691058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64117577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32058738 + 32058739.

It is an arithmetic number, because the mean of its divisors is an integer number (32058739).

Almost surely, 2^64117477 is an apocalyptic number.

It is an amenable number.

64117477 is a deficient number, since it is larger than the sum of its proper divisors (1).

64117477 is an equidigital number, since it uses as much as digits as its factorization.

64117477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928, while the sum is 37.

The square root of 64117477 is about 8007.3389462418. The cubic root of 64117477 is about 400.2445941538.

The spelling of 64117477 in words is "sixty-four million, one hundred seventeen thousand, four hundred seventy-seven".