64147657 has 16 divisors (see below), whose sum is σ = 75422592. Its totient is φ = 53412480.

The previous prime is 64147637. The next prime is 64147663. The reversal of 64147657 is 75674146.

64147657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64147657 - 2¹⁵ = 64114889 is a prime.

It is a super-2 number, since 2×64147657² = 8229843797179298, which contains 22 as substring.

Its product of digits (141120) is a multiple of the sum of its prime divisors (1008).

It is not an unprimeable number, because it can be changed into a prime (64147607) 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 in 15 ways as a sum of consecutive naturals, for example, 113658 + ... + 114220.

It is an arithmetic number, because the mean of its divisors is an integer number (4713912).

Almost surely, 2^64147657 is an apocalyptic number.

It is an amenable number.

64147657 is a deficient number, since it is larger than the sum of its proper divisors (11274935).

64147657 is a wasteful number, since it uses less digits than its factorization.

64147657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its digits is 141120, while the sum is 40.

The square root of 64147657 is about 8009.2232457336. The cubic root of 64147657 is about 400.3073824795.

The spelling of 64147657 in words is "sixty-four million, one hundred forty-seven thousand, six hundred fifty-seven".