64947164 has 12 divisors (see below), whose sum is σ = 115096800. Its totient is φ = 32062368.

The previous prime is 64947161. The next prime is 64947199. The reversal of 64947164 is 46174946.

It is a super-2 number, since 2×64947164² = 8436268223285792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) 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 (64947161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102449 + ... + 103080.

It is an arithmetic number, because the mean of its divisors is an integer number (9591400).

Almost surely, 2^64947164 is an apocalyptic number.

It is an amenable number.

64947164 is a deficient number, since it is larger than the sum of its proper divisors (50149636).

64947164 is a wasteful number, since it uses less digits than its factorization.

64947164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205612 (or 205610 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 64947164 is about 8058.9803325235. The cubic root of 64947164 is about 401.9636032162.

The spelling of 64947164 in words is "sixty-four million, nine hundred forty-seven thousand, one hundred sixty-four".