64190502 has 64 divisors (see below), whose sum is σ = 148377600. Its totient is φ = 20554560.

The previous prime is 64190479. The next prime is 64190509. The reversal of 64190502 is 20509146.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64190509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174723 + ... + 175089.

It is an arithmetic number, because the mean of its divisors is an integer number (2318400).

Almost surely, 2^64190502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64190502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74188800).

64190502 is an abundant number, since it is smaller than the sum of its proper divisors (84187098).

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

64190502 is a wasteful number, since it uses less digits than its factorization.

64190502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 64190502 is about 8011.8975280516. The cubic root of 64190502 is about 400.3964860339.

Adding to 64190502 its reverse (20509146), we get a palindrome (84699648).

The spelling of 64190502 in words is "sixty-four million, one hundred ninety thousand, five hundred two".