64172652 has 48 divisors (see below), whose sum is σ = 161898240. Its totient is φ = 19714752.

The previous prime is 64172639. The next prime is 64172653. The reversal of 64172652 is 25627146.

It is not an unprimeable number, because it can be changed into a prime (64172653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4633 + ... + 12239.

It is an arithmetic number, because the mean of its divisors is an integer number (3372880).

Almost surely, 2^64172652 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 64172652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80949120).

64172652 is an abundant number, since it is smaller than the sum of its proper divisors (97725588).

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

64172652 is a wasteful number, since it uses less digits than its factorization.

64172652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670 (or 7668 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 64172652 is about 8010.7834822819. The cubic root of 64172652 is about 400.3593687053.

Adding to 64172652 its reverse (25627146), we get a palindrome (89799798).

The spelling of 64172652 in words is "sixty-four million, one hundred seventy-two thousand, six hundred fifty-two".