64825631 has 8 divisors (see below), whose sum is σ = 69887664. Its totient is φ = 59774400.

The previous prime is 64825613. The next prime is 64825667. The reversal of 64825631 is 13652846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64825631 - 2²² = 60631327 is a prime.

It is a super-2 number, since 2×64825631² = 8404724869096322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64825591 and 64825600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64825031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13331 + ... + 17531.

It is an arithmetic number, because the mean of its divisors is an integer number (8735958).

Almost surely, 2^64825631 is an apocalyptic number.

64825631 is a deficient number, since it is larger than the sum of its proper divisors (5062033).

64825631 is a wasteful number, since it uses less digits than its factorization.

64825631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401.

The product of its digits is 34560, while the sum is 35.

The square root of 64825631 is about 8051.4365798906. The cubic root of 64825631 is about 401.7127205869.

It can be divided in two parts, 64825 and 631, that added together give a palindrome (65456).

The spelling of 64825631 in words is "sixty-four million, eight hundred twenty-five thousand, six hundred thirty-one".