13699680 has 48 divisors (see below), whose sum is σ = 43155504. Its totient is φ = 3653120.

The previous prime is 13699667. The next prime is 13699717. The reversal of 13699680 is 8699631.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13791 + ... + 14750.

It is an arithmetic number, because the mean of its divisors is an integer number (899073).

Almost surely, 2^13699680 is an apocalyptic number.

13699680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13699680 is an abundant number, since it is smaller than the sum of its proper divisors (29455824).

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

13699680 is a wasteful number, since it uses less digits than its factorization.

13699680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28559 (or 28551 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 13699680 is about 3701.3078769538. The cubic root of 13699680 is about 239.2783880476.

The spelling of 13699680 in words is "thirteen million, six hundred ninety-nine thousand, six hundred eighty".