64843772 has 12 divisors (see below), whose sum is σ = 129687600. Its totient is φ = 27790176.

The previous prime is 64843771. The next prime is 64843781. The reversal of 64843772 is 27734846.

64843772 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64843771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157897 + ... + 1157952.

It is an arithmetic number, because the mean of its divisors is an integer number (10807300).

Almost surely, 2^64843772 is an apocalyptic number.

It is an amenable number.

64843772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64843772 is a wasteful number, since it uses less digits than its factorization.

64843772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315860 (or 2315858 counting only the distinct ones).

The product of its digits is 225792, while the sum is 41.

The square root of 64843772 is about 8052.5630702280. The cubic root of 64843772 is about 401.7501892582.

The spelling of 64843772 in words is "sixty-four million, eight hundred forty-three thousand, seven hundred seventy-two".