663240254 has 16 divisors (see below), whose sum is σ = 1002003792. Its totient is φ = 329246208.

The previous prime is 663240247. The next prime is 663240269. The reversal of 663240254 is 452042366.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 663240254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235217 + ... + 238019.

It is an arithmetic number, because the mean of its divisors is an integer number (62625237).

Almost surely, 2^663240254 is an apocalyptic number.

663240254 is a deficient number, since it is larger than the sum of its proper divisors (338763538).

663240254 is a wasteful number, since it uses less digits than its factorization.

663240254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 663240254 is about 25753.4513026895. The cubic root of 663240254 is about 872.0812697801.

The spelling of 663240254 in words is "six hundred sixty-three million, two hundred forty thousand, two hundred fifty-four".