13870670 has 16 divisors (see below), whose sum is σ = 27237168. Its totient is φ = 5043840.

The previous prime is 13870667. The next prime is 13870693. The reversal of 13870670 is 7607831.

13870670 = 204² + 205² + ... + 368².

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62939 + ... + 63158.

It is an arithmetic number, because the mean of its divisors is an integer number (1702323).

Almost surely, 2^13870670 is an apocalyptic number.

13870670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13870670 is a deficient number, since it is larger than the sum of its proper divisors (13366498).

13870670 is a wasteful number, since it uses less digits than its factorization.

13870670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126115.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 13870670 is about 3724.3348399412. The cubic root of 13870670 is about 240.2697776550.

The spelling of 13870670 in words is "thirteen million, eight hundred seventy thousand, six hundred seventy".