10421660 has 24 divisors (see below), whose sum is σ = 22031520. Its totient is φ = 4140864.

The previous prime is 10421623. The next prime is 10421669. The reversal of 10421660 is 6612401.

It is a happy number.

10421660 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 2×10421660² = 217221994311200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421669) 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, 1481 + ... + 4799.

It is an arithmetic number, because the mean of its divisors is an integer number (917980).

Almost surely, 2^10421660 is an apocalyptic number.

10421660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10421660 is an abundant number, since it is smaller than the sum of its proper divisors (11609860).

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

10421660 is a wasteful number, since it uses less digits than its factorization.

10421660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 10421660 is about 3228.2595930315. The cubic root of 10421660 is about 218.4300072372.

The spelling of 10421660 in words is "ten million, four hundred twenty-one thousand, six hundred sixty".