721034084 has 24 divisors (see below), whose sum is σ = 1359149568. Its totient is φ = 333717120.

The previous prime is 721034063. The next prime is 721034099. The reversal of 721034084 is 480430127.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123557 + ... + 129260.

It is an arithmetic number, because the mean of its divisors is an integer number (56631232).

Almost surely, 2^721034084 is an apocalyptic number.

It is an amenable number.

721034084 is a deficient number, since it is larger than the sum of its proper divisors (638115484).

721034084 is a wasteful number, since it uses less digits than its factorization.

721034084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252875 (or 252873 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 721034084 is about 26852.0778339405. The cubic root of 721034084 is about 896.7098319179.

The spelling of 721034084 in words is "seven hundred twenty-one million, thirty-four thousand, eighty-four".