720564854 has 8 divisors (see below), whose sum is σ = 1137734040. Its totient is φ = 341320176.

The previous prime is 720564851. The next prime is 720564877. The reversal of 720564854 is 458465027.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720564851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9481079 + ... + 9481154.

It is an arithmetic number, because the mean of its divisors is an integer number (142216755).

Almost surely, 2^720564854 is an apocalyptic number.

720564854 is a deficient number, since it is larger than the sum of its proper divisors (417169186).

720564854 is a wasteful number, since it uses less digits than its factorization.

720564854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18962254.

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 720564854 is about 26843.3390992998. The cubic root of 720564854 is about 896.5152713229.

The spelling of 720564854 in words is "seven hundred twenty million, five hundred sixty-four thousand, eight hundred fifty-four".