890697720 has 64 divisors (see below), whose sum is σ = 2915015040. Its totient is φ = 215926400.

The previous prime is 890697697. The next prime is 890697727. The reversal of 890697720 is 27796098.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 890697720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890697727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336066 + ... + 338705.

It is an arithmetic number, because the mean of its divisors is an integer number (45547110).

Almost surely, 2^890697720 is an apocalyptic number.

It is an amenable number.

890697720 is an abundant number, since it is smaller than the sum of its proper divisors (2024317320).

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

890697720 is a wasteful number, since it uses less digits than its factorization.

890697720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674796 (or 674792 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 890697720 is about 29844.5593031628. The cubic root of 890697720 is about 962.1514681184.

The spelling of 890697720 in words is "eight hundred ninety million, six hundred ninety-seven thousand, seven hundred twenty".