10820690 has 16 divisors (see below), whose sum is σ = 20502720. Its totient is φ = 4100400.

The previous prime is 10820651. The next prime is 10820699. The reversal of 10820690 is 9602801.

10820690 = T₄₂₉ + T₄₃₀ + ... + T₅₂₃.

It is a super-2 number, since 2×10820690² = 234174664152200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10820699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28286 + ... + 28665.

It is an arithmetic number, because the mean of its divisors is an integer number (1281420).

Almost surely, 2^10820690 is an apocalyptic number.

10820690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10820690 is a deficient number, since it is larger than the sum of its proper divisors (9682030).

10820690 is a wasteful number, since it uses less digits than its factorization.

10820690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56977.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 10820690 is about 3289.4817220954. The cubic root of 10820690 is about 221.1829528614.

The spelling of 10820690 in words is "ten million, eight hundred twenty thousand, six hundred ninety".