64161504 has 192 divisors, whose sum is σ = 210228480. Its totient is φ = 18869760.

The previous prime is 64161479. The next prime is 64161529. The reversal of 64161504 is 40516146.

64161504 is a `hidden beast` number, since 6 + 41 + 615 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (64161479) and next prime (64161529).

It is a hoax number, since the sum of its digits (27) 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 (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408594 + ... + 408750.

It is an arithmetic number, because the mean of its divisors is an integer number (1094940).

Almost surely, 2^64161504 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 64161504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105114240).

64161504 is an abundant number, since it is smaller than the sum of its proper divisors (146066976).

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

64161504 is a wasteful number, since it uses less digits than its factorization.

64161504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 64161504 is about 8010.0876399700. The cubic root of 64161504 is about 400.3361840382.

The spelling of 64161504 in words is "sixty-four million, one hundred sixty-one thousand, five hundred four".