720846999 has 32 divisors (see below), whose sum is σ = 1113415680. Its totient is φ = 460404000.

The previous prime is 720846989. The next prime is 720847003. The reversal of 720846999 is 999648027.

It is not a de Polignac number, because 720846999 - 2¹⁶ = 720781463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720846989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80274 + ... + 88800.

It is an arithmetic number, because the mean of its divisors is an integer number (34794240).

Almost surely, 2^720846999 is an apocalyptic number.

720846999 is a deficient number, since it is larger than the sum of its proper divisors (392568681).

720846999 is a wasteful number, since it uses less digits than its factorization.

720846999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8668 (or 8662 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 720846999 is about 26848.5939855330. The cubic root of 720846999 is about 896.6322694863.

The spelling of 720846999 in words is "seven hundred twenty million, eight hundred forty-six thousand, nine hundred ninety-nine".