721190914 has 8 divisors (see below), whose sum is σ = 1091896848. Its totient is φ = 357225300.

The previous prime is 721190909. The next prime is 721190929. The reversal of 721190914 is 419091127.

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

It is a self number, because there is not a number n which added to its sum of digits gives 721190914.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684812 + ... + 1685239.

It is an arithmetic number, because the mean of its divisors is an integer number (136487106).

Almost surely, 2^721190914 is an apocalyptic number.

721190914 is a deficient number, since it is larger than the sum of its proper divisors (370705934).

721190914 is a wasteful number, since it uses less digits than its factorization.

721190914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370160.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 721190914 is about 26854.9979333457. The cubic root of 721190914 is about 896.7748407764.

The spelling of 721190914 in words is "seven hundred twenty-one million, one hundred ninety thousand, nine hundred fourteen".