13787690 has 32 divisors (see below), whose sum is σ = 28491264. Its totient is φ = 4705920.

The previous prime is 13787689. The next prime is 13787707. The reversal of 13787690 is 9678731.

It is a super-2 number, since 2×13787690² = 380200791072200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29942 + ... + 30398.

It is an arithmetic number, because the mean of its divisors is an integer number (890352).

Almost surely, 2^13787690 is an apocalyptic number.

13787690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13787690 is an abundant number, since it is smaller than the sum of its proper divisors (14703574).

13787690 is a wasteful number, since it uses less digits than its factorization.

13787690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 13787690 is about 3713.1778842388. The cubic root of 13787690 is about 239.7896884434.

The spelling of 13787690 in words is "thirteen million, seven hundred eighty-seven thousand, six hundred ninety".