13604816 has 10 divisors (see below), whose sum is σ = 26359362. Its totient is φ = 6802400.

The previous prime is 13604803. The next prime is 13604821. The reversal of 13604816 is 61840631.

It can be written as a sum of positive squares in only one way, i.e., 13249600 + 355216 = 3640^2 + 596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425135 + ... + 425166.

Almost surely, 2^13604816 is an apocalyptic number.

13604816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13604816 is a deficient number, since it is larger than the sum of its proper divisors (12754546).

13604816 is an equidigital number, since it uses as much as digits as its factorization.

13604816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850309 (or 850303 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 13604816 is about 3688.4706857992. The cubic root of 13604816 is about 238.7248106243.

The spelling of 13604816 in words is "thirteen million, six hundred four thousand, eight hundred sixteen".