890026665 has 32 divisors (see below), whose sum is σ = 1564880256. Its totient is φ = 428367360.

The previous prime is 890026663. The next prime is 890026693. The reversal of 890026665 is 566620098.

890026665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 890026665 - 2¹ = 890026663 is a prime.

It is a super-2 number, since 2×890026665² = 1584294928822044450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (890026663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2919 + ... + 42291.

It is an arithmetic number, because the mean of its divisors is an integer number (48902508).

Almost surely, 2^890026665 is an apocalyptic number.

It is an amenable number.

890026665 is a deficient number, since it is larger than the sum of its proper divisors (674853591).

890026665 is a wasteful number, since it uses less digits than its factorization.

890026665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39529.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 890026665 is about 29833.3146834206. The cubic root of 890026665 is about 961.9097779043.

The spelling of 890026665 in words is "eight hundred ninety million, twenty-six thousand, six hundred sixty-five".