64493372 has 36 divisors (see below), whose sum is σ = 121295160. Its totient is φ = 29992032.

The previous prime is 64493371. The next prime is 64493381. The reversal of 64493372 is 27339446.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64493371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84818 + ... + 85574.

It is an arithmetic number, because the mean of its divisors is an integer number (3369310).

Almost surely, 2^64493372 is an apocalyptic number.

It is an amenable number.

64493372 is a deficient number, since it is larger than the sum of its proper divisors (56801788).

64493372 is a wasteful number, since it uses less digits than its factorization.

64493372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 837 counting only the distinct ones).

The product of its digits is 108864, while the sum is 38.

The square root of 64493372 is about 8030.7765502472. The cubic root of 64493372 is about 401.0252283554.

The spelling of 64493372 in words is "sixty-four million, four hundred ninety-three thousand, three hundred seventy-two".