730874521 has 8 divisors (see below), whose sum is σ = 794453184. Its totient is φ = 668346960.

The previous prime is 730874513. The next prime is 730874563. The reversal of 730874521 is 125478037.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 730874521 - 2³ = 730874513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730871521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261325 + ... + 264106.

It is an arithmetic number, because the mean of its divisors is an integer number (99306648).

Almost surely, 2^730874521 is an apocalyptic number.

It is an amenable number.

730874521 is a deficient number, since it is larger than the sum of its proper divisors (63578663).

730874521 is a wasteful number, since it uses less digits than its factorization.

730874521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525551.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 730874521 is about 27034.6910653701. The cubic root of 730874521 is about 900.7707475729.

The spelling of 730874521 in words is "seven hundred thirty million, eight hundred seventy-four thousand, five hundred twenty-one".