890876661 has 8 divisors (see below), whose sum is σ = 1199596704. Its totient is φ = 588037200.

The previous prime is 890876647. The next prime is 890876671. The reversal of 890876661 is 166678098.

It is a happy number.

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

It is not a de Polignac number, because 890876661 - 2¹⁷ = 890745589 is a prime.

It is a super-2 number, since 2×890876661² = 1587322450229017842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890876611) 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, 1469791 + ... + 1470396.

It is an arithmetic number, because the mean of its divisors is an integer number (149949588).

Almost surely, 2^890876661 is an apocalyptic number.

It is an amenable number.

890876661 is a deficient number, since it is larger than the sum of its proper divisors (308720043).

890876661 is a wasteful number, since it uses less digits than its factorization.

890876661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940291.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 890876661 is about 29847.5570357106. The cubic root of 890876661 is about 962.2158958189.

The spelling of 890876661 in words is "eight hundred ninety million, eight hundred seventy-six thousand, six hundred sixty-one".