64493316 has 36 divisors (see below), whose sum is σ = 164864700. Its totient is φ = 21255168.

The previous prime is 64493279. The next prime is 64493323. The reversal of 64493316 is 61339446.

64493316 is a `hidden beast` number, since 644 + 9 + 3 + 3 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36360900 + 28132416 = 6030^2 + 5304^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6861 + ... + 13268.

It is an arithmetic number, because the mean of its divisors is an integer number (4579575).

Almost surely, 2^64493316 is an apocalyptic number.

It is an amenable number.

64493316 is an abundant number, since it is smaller than the sum of its proper divisors (100371384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64493316 is a wasteful number, since it uses less digits than its factorization.

64493316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20228 (or 20223 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 64493316 is about 8030.7730636596. The cubic root of 64493316 is about 401.0251122844.

The spelling of 64493316 in words is "sixty-four million, four hundred ninety-three thousand, three hundred sixteen".