13964690 has 8 divisors (see below), whose sum is σ = 25136460. Its totient is φ = 5585872.

The previous prime is 13964659. The next prime is 13964729. The reversal of 13964690 is 9646931.

It can be written as a sum of positive squares in 2 ways, for example, as 13697401 + 267289 = 3701^2 + 517^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13964690² = 390025133592200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698225 + ... + 698244.

Almost surely, 2^13964690 is an apocalyptic number.

13964690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13964690 is a deficient number, since it is larger than the sum of its proper divisors (11171770).

13964690 is a wasteful number, since it uses less digits than its factorization.

13964690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396476.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 13964690 is about 3736.9359106091. The cubic root of 13964690 is about 240.8114317262.

The spelling of 13964690 in words is "thirteen million, nine hundred sixty-four thousand, six hundred ninety".