64676895 has 16 divisors (see below), whose sum is σ = 103593600. Its totient is φ = 34457504.

The previous prime is 64676879. The next prime is 64676951. The reversal of 64676895 is 59867646.

It is a cyclic number.

It is not a de Polignac number, because 64676895 - 2⁴ = 64676879 is a prime.

It is a super-3 number, since 3×64676895³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17956 + ... + 21254.

It is an arithmetic number, because the mean of its divisors is an integer number (6474600).

Almost surely, 2^64676895 is an apocalyptic number.

64676895 is a deficient number, since it is larger than the sum of its proper divisors (38916705).

64676895 is a wasteful number, since it uses less digits than its factorization.

64676895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614.

The product of its digits is 2177280, while the sum is 51.

The square root of 64676895 is about 8042.1946631501. The cubic root of 64676895 is about 401.4052552794.

Subtracting from 64676895 its reverse (59867646), we obtain a square (4809249 = 2193²).

The spelling of 64676895 in words is "sixty-four million, six hundred seventy-six thousand, eight hundred ninety-five".