663244242 has 16 divisors (see below), whose sum is σ = 1329644352. Its totient is φ = 220555440.

The previous prime is 663244237. The next prime is 663244247. The reversal of 663244242 is 242442366.

It is an interprime number because it is at equal distance from previous prime (663244237) and next prime (663244247).

It is not an unprimeable number, because it can be changed into a prime (663244247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128758 + ... + 133809.

It is an arithmetic number, because the mean of its divisors is an integer number (83102772).

Almost surely, 2^663244242 is an apocalyptic number.

663244242 is an abundant number, since it is smaller than the sum of its proper divisors (666400110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663244242 is a wasteful number, since it uses less digits than its factorization.

663244242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262993.

The product of its digits is 55296, while the sum is 33.

The square root of 663244242 is about 25753.5287290888. The cubic root of 663244242 is about 872.0830176902.

The spelling of 663244242 in words is "six hundred sixty-three million, two hundred forty-four thousand, two hundred forty-two".