13695990 has 128 divisors (see below), whose sum is σ = 42163200. Its totient is φ = 2845920.

The previous prime is 13695961. The next prime is 13696019. The reversal of 13695990 is 9959631.

It is an interprime number because it is at equal distance from previous prime (13695961) and next prime (13696019).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1245085 + ... + 1245095.

It is an arithmetic number, because the mean of its divisors is an integer number (329400).

Almost surely, 2^13695990 is an apocalyptic number.

13695990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13695990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21081600).

13695990 is an abundant number, since it is smaller than the sum of its proper divisors (28467210).

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

13695990 is an equidigital number, since it uses as much as digits as its factorization.

13695990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 13695990 is about 3700.8093709350. The cubic root of 13695990 is about 239.2569029584.

The spelling of 13695990 in words is "thirteen million, six hundred ninety-five thousand, nine hundred ninety".