721434883 has 16 divisors (see below), whose sum is σ = 844211200. Its totient is φ = 610532640.

The previous prime is 721434863. The next prime is 721434919. The reversal of 721434883 is 388434127.

It is a cyclic number.

It is not a de Polignac number, because 721434883 - 2²⁵ = 687880451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721434853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39453 + ... + 54766.

It is an arithmetic number, because the mean of its divisors is an integer number (52763200).

Almost surely, 2^721434883 is an apocalyptic number.

721434883 is a deficient number, since it is larger than the sum of its proper divisors (122776317).

721434883 is a wasteful number, since it uses less digits than its factorization.

721434883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94282.

The product of its digits is 129024, while the sum is 40.

The square root of 721434883 is about 26859.5398880919. The cubic root of 721434883 is about 896.8759515876.

The spelling of 721434883 in words is "seven hundred twenty-one million, four hundred thirty-four thousand, eight hundred eighty-three".