13906662 has 64 divisors (see below), whose sum is σ = 35831808. Its totient is φ = 3492000.

The previous prime is 13906657. The next prime is 13906681. The reversal of 13906662 is 26660931.

It is a happy number.

13906662 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13837 + ... + 14807.

It is an arithmetic number, because the mean of its divisors is an integer number (559872).

Almost surely, 2^13906662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13906662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17915904).

13906662 is an abundant number, since it is smaller than the sum of its proper divisors (21925146).

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

13906662 is a wasteful number, since it uses less digits than its factorization.

13906662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 13906662 is about 3729.1637132204. The cubic root of 13906662 is about 240.4774177271.

It can be divided in two parts, 139066 and 62, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 13906662 in words is "thirteen million, nine hundred six thousand, six hundred sixty-two".