890579985 has 16 divisors (see below), whose sum is σ = 1426873920. Its totient is φ = 474327360.

The previous prime is 890579981. The next prime is 890579993. The reversal of 890579985 is 589975098.

It is not a de Polignac number, because 890579985 - 2² = 890579981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890579981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29086 + ... + 51255.

It is an arithmetic number, because the mean of its divisors is an integer number (89179620).

Almost surely, 2^890579985 is an apocalyptic number.

It is an amenable number.

890579985 is a deficient number, since it is larger than the sum of its proper divisors (536293935).

890579985 is a wasteful number, since it uses less digits than its factorization.

890579985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81088.

The product of its (nonzero) digits is 8164800, while the sum is 60.

The square root of 890579985 is about 29842.5867679060. The cubic root of 890579985 is about 962.1090729294.

The spelling of 890579985 in words is "eight hundred ninety million, five hundred seventy-nine thousand, nine hundred eighty-five".