253646816 has 12 divisors (see below), whose sum is σ = 499367232. Its totient is φ = 126823392.

The previous prime is 253646779. The next prime is 253646819. The reversal of 253646816 is 618646352.

253646816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253646819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3963200 + ... + 3963263.

It is an arithmetic number, because the mean of its divisors is an integer number (41613936).

Almost surely, 2^253646816 is an apocalyptic number.

It is an amenable number.

253646816 is a deficient number, since it is larger than the sum of its proper divisors (245720416).

253646816 is an equidigital number, since it uses as much as digits as its factorization.

253646816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926473 (or 7926465 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 253646816 is about 15926.2932284948. The cubic root of 253646816 is about 633.0088837395.

The spelling of 253646816 in words is "two hundred fifty-three million, six hundred forty-six thousand, eight hundred sixteen".