890656381 has 8 divisors (see below), whose sum is σ = 951091200. Its totient is φ = 832203120.

The previous prime is 890656363. The next prime is 890656387. The reversal of 890656381 is 183656098.

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

It is a cyclic number.

It is not a de Polignac number, because 890656381 - 2⁷ = 890656253 is a prime.

It is a super-2 number, since 2×890656381² = 1586537578032034322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890656387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494461 + ... + 496258.

It is an arithmetic number, because the mean of its divisors is an integer number (118886400).

Almost surely, 2^890656381 is an apocalyptic number.

It is an amenable number.

890656381 is a deficient number, since it is larger than the sum of its proper divisors (60434819).

890656381 is a wasteful number, since it uses less digits than its factorization.

890656381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990779.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 890656381 is about 29843.8667233319. The cubic root of 890656381 is about 962.1365827860.

The spelling of 890656381 in words is "eight hundred ninety million, six hundred fifty-six thousand, three hundred eighty-one".