13400655 has 16 divisors (see below), whose sum is σ = 21600864. Its totient is φ = 7093760.

The previous prime is 13400633. The next prime is 13400657. The reversal of 13400655 is 55600431.

It is not a de Polignac number, because 13400655 - 2⁶ = 13400591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (1350054).

Almost surely, 2^13400655 is an apocalyptic number.

13400655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13400655 is a deficient number, since it is larger than the sum of its proper divisors (8200209).

13400655 is a wasteful number, since it uses less digits than its factorization.

13400655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 13400655 is about 3660.6905086336. The cubic root of 13400655 is about 237.5246437955.

The spelling of 13400655 in words is "thirteen million, four hundred thousand, six hundred fifty-five".