64161792 has 108 divisors (see below), whose sum is σ = 188505135. Its totient is φ = 21024768.

The previous prime is 64161781. The next prime is 64161793. The reversal of 64161792 is 29716146.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

64161792 is a `hidden beast` number, since 641 + 6 + 1 + 7 + 9 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32080896 + 32080896 = 5664^2 + 5664^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5664.

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

It is not an unprimeable number, because it can be changed into a prime (64161793) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1087459 + ... + 1087517.

Almost surely, 2^64161792 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 64161792

64161792 is an abundant number, since it is smaller than the sum of its proper divisors (124343343).

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

64161792 is an equidigital number, since it uses as much as digits as its factorization.

64161792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 64 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 64161792 is about 8010.1056172812. The cubic root of 64161792 is about 400.3367830301.

The spelling of 64161792 in words is "sixty-four million, one hundred sixty-one thousand, seven hundred ninety-two".