64125658 has 4 divisors (see below), whose sum is σ = 96188490. Its totient is φ = 32062828.

The previous prime is 64125653. The next prime is 64125661. The reversal of 64125658 is 85652146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85652146 = 2 ⋅42826073.

It can be written as a sum of positive squares in only one way, i.e., 61732449 + 2393209 = 7857^2 + 1547^2 .

It is a super-2 number, since 2×64125658² = 8224200027865928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64125653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16031413 + ... + 16031416.

Almost surely, 2^64125658 is an apocalyptic number.

64125658 is a deficient number, since it is larger than the sum of its proper divisors (32062832).

64125658 is a wasteful number, since it uses less digits than its factorization.

64125658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32062831.

The product of its digits is 57600, while the sum is 37.

The square root of 64125658 is about 8007.8497738157. The cubic root of 64125658 is about 400.2616163549.

The spelling of 64125658 in words is "sixty-four million, one hundred twenty-five thousand, six hundred fifty-eight".