720691458 has 8 divisors (see below), whose sum is σ = 1441382928. Its totient is φ = 240230484.

The previous prime is 720691457. The next prime is 720691471. The reversal of 720691458 is 854196027.

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

720691458 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (720691457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60057616 + ... + 60057627.

It is an arithmetic number, because the mean of its divisors is an integer number (180172866).

Almost surely, 2^720691458 is an apocalyptic number.

720691458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720691458 is a wasteful number, since it uses less digits than its factorization.

720691458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120115248.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 720691458 is about 26845.6971971301. The cubic root of 720691458 is about 896.5677744723.

The spelling of 720691458 in words is "seven hundred twenty million, six hundred ninety-one thousand, four hundred fifty-eight".