864720446 has 4 divisors (see below), whose sum is σ = 1297080672. Its totient is φ = 432360222.

The previous prime is 864720413. The next prime is 864720469. The reversal of 864720446 is 644027468.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216180110 + ... + 216180113.

It is an arithmetic number, because the mean of its divisors is an integer number (324270168).

Almost surely, 2^864720446 is an apocalyptic number.

864720446 is a deficient number, since it is larger than the sum of its proper divisors (432360226).

864720446 is a wasteful number, since it uses less digits than its factorization.

864720446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432360225.

The product of its (nonzero) digits is 258048, while the sum is 41.

The square root of 864720446 is about 29406.1293950768. The cubic root of 864720446 is about 952.7052883596.

The spelling of 864720446 in words is "eight hundred sixty-four million, seven hundred twenty thousand, four hundred forty-six".