721914846 has 32 divisors (see below), whose sum is σ = 1521262080. Its totient is φ = 227936544.

The previous prime is 721914833. The next prime is 721914913. The reversal of 721914846 is 648419127.

It is a super-2 number, since 2×721914846² = 1042322089750407432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 721914798 and 721914807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11181 + ... + 39608.

It is an arithmetic number, because the mean of its divisors is an integer number (47539440).

Almost surely, 2^721914846 is an apocalyptic number.

721914846 is an abundant number, since it is smaller than the sum of its proper divisors (799347234).

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

721914846 is a wasteful number, since it uses less digits than its factorization.

721914846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50920.

The product of its digits is 96768, while the sum is 42.

The square root of 721914846 is about 26868.4730865005. The cubic root of 721914846 is about 897.0748015258.

The spelling of 721914846 in words is "seven hundred twenty-one million, nine hundred fourteen thousand, eight hundred forty-six".