64417684 has 24 divisors (see below), whose sum is σ = 115917480. Its totient is φ = 31309824.

The previous prime is 64417681. The next prime is 64417697. The reversal of 64417684 is 48671446.

It can be written as a sum of positive squares in 4 ways, for example, as 864900 + 63552784 = 930^2 + 7972^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64417681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22612 + ... + 25300.

It is an arithmetic number, because the mean of its divisors is an integer number (4829895).

Almost surely, 2^64417684 is an apocalyptic number.

It is an amenable number.

64417684 is a deficient number, since it is larger than the sum of its proper divisors (51499796).

64417684 is a wasteful number, since it uses less digits than its factorization.

64417684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859 (or 2857 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 64417684 is about 8026.0627956676. The cubic root of 64417684 is about 400.8682888225.

The spelling of 64417684 in words is "sixty-four million, four hundred seventeen thousand, six hundred eighty-four".