10661650 has 48 divisors (see below), whose sum is σ = 21141504. Its totient is φ = 3991680.

The previous prime is 10661611. The next prime is 10661653. The reversal of 10661650 is 5616601.

It is a super-2 number, since 2×10661650² = 227341561445000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83887 + ... + 84013.

It is an arithmetic number, because the mean of its divisors is an integer number (440448).

Almost surely, 2^10661650 is an apocalyptic number.

10661650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10661650 is a deficient number, since it is larger than the sum of its proper divisors (10479854).

10661650 is a wasteful number, since it uses less digits than its factorization.

10661650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 10661650 is about 3265.2182162912. The cubic root of 10661650 is about 220.0939681223.

It can be divided in two parts, 10661 and 650, that added together give a palindrome (11311).

The spelling of 10661650 in words is "ten million, six hundred sixty-one thousand, six hundred fifty".