720954168 has 128 divisors (see below), whose sum is σ = 2062368000. Its totient is φ = 208051200.

The previous prime is 720954137. The next prime is 720954193. The reversal of 720954168 is 861459027.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 464658 + ... + 466206.

It is an arithmetic number, because the mean of its divisors is an integer number (16112250).

Almost surely, 2^720954168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720954168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031184000).

720954168 is an abundant number, since it is smaller than the sum of its proper divisors (1341413832).

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

720954168 is a wasteful number, since it uses less digits than its factorization.

720954168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653 (or 1649 counting only the distinct ones).

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

The square root of 720954168 is about 26850.5897141944. The cubic root of 720954168 is about 896.6767016715.

The spelling of 720954168 in words is "seven hundred twenty million, nine hundred fifty-four thousand, one hundred sixty-eight".