10661250 has 40 divisors (see below), whose sum is σ = 26653968. Its totient is φ = 2842000.

The previous prime is 10661249. The next prime is 10661263. The reversal of 10661250 is 5216601.

It is a happy number.

It is a super-2 number, since 2×10661250² = 227324503125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2329 + ... + 5171.

Almost surely, 2^10661250 is an apocalyptic number.

10661250 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 10661250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13326984).

10661250 is an abundant number, since it is smaller than the sum of its proper divisors (15992718).

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

10661250 is an equidigital number, since it uses as much as digits as its factorization.

10661250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 2853 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 10661250 is about 3265.1569640677. The cubic root of 10661250 is about 220.0912156188.

Adding to 10661250 its reverse (5216601), we get a palindrome (15877851).

The spelling of 10661250 in words is "ten million, six hundred sixty-one thousand, two hundred fifty".