13697776 has 10 divisors (see below), whose sum is σ = 26539472. Its totient is φ = 6848880.

The previous prime is 13697743. The next prime is 13697777. The reversal of 13697776 is 67779631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13697777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428040 + ... + 428071.

Almost surely, 2^13697776 is an apocalyptic number.

13697776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13697776 is a deficient number, since it is larger than the sum of its proper divisors (12841696).

13697776 is an equidigital number, since it uses as much as digits as its factorization.

13697776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856119 (or 856113 counting only the distinct ones).

The product of its digits is 333396, while the sum is 46.

The square root of 13697776 is about 3701.0506616365. The cubic root of 13697776 is about 239.2673024563.

The spelling of 13697776 in words is "thirteen million, six hundred ninety-seven thousand, seven hundred seventy-six".