10661490 has 64 divisors (see below), whose sum is σ = 32497920. Its totient is φ = 2436480.

The previous prime is 10661479. The next prime is 10661491. The reversal of 10661490 is 9416601.

10661490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10661490² = 227334738040200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10661491) 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, 931 + ... + 4710.

It is an arithmetic number, because the mean of its divisors is an integer number (507780).

Almost surely, 2^10661490 is an apocalyptic number.

10661490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10661490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16248960).

10661490 is an abundant number, since it is smaller than the sum of its proper divisors (21836430).

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

10661490 is a wasteful number, since it uses less digits than its factorization.

10661490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664 (or 5658 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 10661490 is about 3265.1937155397. The cubic root of 10661490 is about 220.0928671292.

It can be divided in two parts, 1066 and 1490, that added together give a triangular number (2556 = T₇₁).

The spelling of 10661490 in words is "ten million, six hundred sixty-one thousand, four hundred ninety".