253308694 has 4 divisors (see below), whose sum is σ = 379963044. Its totient is φ = 126654346.

The previous prime is 253308647. The next prime is 253308751. The reversal of 253308694 is 496803352.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 63327172 + ... + 63327175.

It is an arithmetic number, because the mean of its divisors is an integer number (94990761).

Almost surely, 2^253308694 is an apocalyptic number.

253308694 is a deficient number, since it is larger than the sum of its proper divisors (126654350).

253308694 is a wasteful number, since it uses less digits than its factorization.

253308694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126654349.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 253308694 is about 15915.6744751833. The cubic root of 253308694 is about 632.7274827358.

The spelling of 253308694 in words is "two hundred fifty-three million, three hundred eight thousand, six hundred ninety-four".