64869826 has 24 divisors (see below), whose sum is σ = 113639760. Its totient is φ = 27691272.

The previous prime is 64869811. The next prime is 64869853. The reversal of 64869826 is 62896846.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 64869826.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26565 + ... + 28903.

It is an arithmetic number, because the mean of its divisors is an integer number (4734990).

Almost surely, 2^64869826 is an apocalyptic number.

64869826 is a deficient number, since it is larger than the sum of its proper divisors (48769934).

64869826 is a wasteful number, since it uses less digits than its factorization.

64869826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638 (or 2631 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 64869826 is about 8054.1806535488. The cubic root of 64869826 is about 401.8039893253.

The spelling of 64869826 in words is "sixty-four million, eight hundred sixty-nine thousand, eight hundred twenty-six".