10659990 has 32 divisors (see below), whose sum is σ = 27910656. Its totient is φ = 2584160.

The previous prime is 10659977. The next prime is 10659991. The reversal of 10659990 is 9995601.

It is a super-2 number, since 2×10659990² = 227270773600200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10659991) 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, 15822 + ... + 16481.

It is an arithmetic number, because the mean of its divisors is an integer number (872208).

Almost surely, 2^10659990 is an apocalyptic number.

10659990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10659990 is an abundant number, since it is smaller than the sum of its proper divisors (17250666).

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

10659990 is a wasteful number, since it uses less digits than its factorization.

10659990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32324.

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 10659990 is about 3264.9640120528. The cubic root of 10659990 is about 220.0825447826.

The spelling of 10659990 in words is "ten million, six hundred fifty-nine thousand, nine hundred ninety".