663625542 has 8 divisors (see below), whose sum is σ = 1327251096. Its totient is φ = 221208512.

The previous prime is 663625513. The next prime is 663625577. The reversal of 663625542 is 245526366.

It is a sphenic number, since it is the product of 3 distinct primes.

663625542 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 663625542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55302123 + ... + 55302134.

It is an arithmetic number, because the mean of its divisors is an integer number (165906387).

Almost surely, 2^663625542 is an apocalyptic number.

663625542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

663625542 is a wasteful number, since it uses less digits than its factorization.

663625542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110604262.

The product of its digits is 259200, while the sum is 39.

The square root of 663625542 is about 25760.9305344353. The cubic root of 663625542 is about 872.2501062381.

The spelling of 663625542 in words is "six hundred sixty-three million, six hundred twenty-five thousand, five hundred forty-two".