663652542 has 32 divisors (see below), whose sum is σ = 1517760000. Its totient is φ = 189510048.

The previous prime is 663652537. The next prime is 663652547. The reversal of 663652542 is 245256366.

It is an interprime number because it is at equal distance from previous prime (663652537) and next prime (663652547).

It is a self number, because there is not a number n which added to its sum of digits gives 663652542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663652547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103959 + ... + 110157.

It is an arithmetic number, because the mean of its divisors is an integer number (47430000).

Almost surely, 2^663652542 is an apocalyptic number.

663652542 is an abundant number, since it is smaller than the sum of its proper divisors (854107458).

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

663652542 is a wasteful number, since it uses less digits than its factorization.

663652542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760.

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

The square root of 663652542 is about 25761.4545784977. The cubic root of 663652542 is about 872.2619354159.

The spelling of 663652542 in words is "six hundred sixty-three million, six hundred fifty-two thousand, five hundred forty-two".