65320164 has 144 divisors (see below), whose sum is σ = 206123008. Its totient is φ = 16982784.

The previous prime is 65320159. The next prime is 65320169. The reversal of 65320164 is 46102356.

65320164 is a `hidden beast` number, since 653 + 2 + 0 + 1 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (65320159) and next prime (65320169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65320169) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 415974 + ... + 416130.

Almost surely, 2^65320164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65320164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103061504).

65320164 is an abundant number, since it is smaller than the sum of its proper divisors (140802844).

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

65320164 is a wasteful number, since it uses less digits than its factorization.

65320164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 65320164 is about 8082.0890863687. The cubic root of 65320164 is about 402.7316444975.

The spelling of 65320164 in words is "sixty-five million, three hundred twenty thousand, one hundred sixty-four".