663701442 has 16 divisors (see below), whose sum is σ = 1330179840. Its totient is φ = 220770992.

The previous prime is 663701393. The next prime is 663701459. The reversal of 663701442 is 244107366.

It is a happy number.

It is a super-2 number, since 2×663701442² = 880999208225758728, which contains 22 as substring.

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, 112593 + ... + 118340.

It is an arithmetic number, because the mean of its divisors is an integer number (83136240).

Almost surely, 2^663701442 is an apocalyptic number.

663701442 is an abundant number, since it is smaller than the sum of its proper divisors (666478398).

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

663701442 is a wasteful number, since it uses less digits than its factorization.

663701442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231417.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 663701442 is about 25762.4036533861. The cubic root of 663701442 is about 872.2833585544.

The spelling of 663701442 in words is "six hundred sixty-three million, seven hundred one thousand, four hundred forty-two".