13401660 has 24 divisors (see below), whose sum is σ = 37524816. Its totient is φ = 3573760.

The previous prime is 13401637. The next prime is 13401667. The reversal of 13401660 is 6610431.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13401667) 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, 111621 + ... + 111740.

It is an arithmetic number, because the mean of its divisors is an integer number (1563534).

Almost surely, 2^13401660 is an apocalyptic number.

13401660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13401660 is an abundant number, since it is smaller than the sum of its proper divisors (24123156).

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

13401660 is a wasteful number, since it uses less digits than its factorization.

13401660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223373 (or 223371 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13401660 is about 3660.8277752443. The cubic root of 13401660 is about 237.5305814729.

The spelling of 13401660 in words is "thirteen million, four hundred one thousand, six hundred sixty".