10660440 has 160 divisors (see below), whose sum is σ = 38317680. Its totient is φ = 2370816.

The previous prime is 10660427. The next prime is 10660453. The reversal of 10660440 is 4406601.

It is an interprime number because it is at equal distance from previous prime (10660427) and next prime (10660453).

It is a super-2 number, since 2×10660440² = 227289961987200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 288102 + ... + 288138.

Almost surely, 2^10660440 is an apocalyptic number.

10660440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10660440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19158840).

10660440 is an abundant number, since it is smaller than the sum of its proper divisors (27657240).

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

10660440 is an equidigital number, since it uses as much as digits as its factorization.

10660440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 10660440 is about 3265.0329247957. The cubic root of 10660440 is about 220.0856415883.

The spelling of 10660440 in words is "ten million, six hundred sixty thousand, four hundred forty".