64387372 has 36 divisors (see below), whose sum is σ = 135315264. Its totient is φ = 26701920.

The previous prime is 64387369. The next prime is 64387429. The reversal of 64387372 is 27378346.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778 + ... + 11374.

Almost surely, 2^64387372 is an apocalyptic number.

64387372 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64387372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67657632).

64387372 is an abundant number, since it is smaller than the sum of its proper divisors (70927892).

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

64387372 is a wasteful number, since it uses less digits than its factorization.

64387372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10646 (or 10637 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 64387372 is about 8024.1742254266. The cubic root of 64387372 is about 400.8054022297.

The spelling of 64387372 in words is "sixty-four million, three hundred eighty-seven thousand, three hundred seventy-two".