663020004 has 24 divisors (see below), whose sum is σ = 1548132768. Its totient is φ = 220851520.

The previous prime is 663020003. The next prime is 663020021. The reversal of 663020004 is 400020366.

It is not an unprimeable number, because it can be changed into a prime (663020003) 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, 882 + ... + 36425.

It is an arithmetic number, because the mean of its divisors is an integer number (64505532).

Almost surely, 2^663020004 is an apocalyptic number.

It is an amenable number.

663020004 is an abundant number, since it is smaller than the sum of its proper divisors (885112764).

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

663020004 is a wasteful number, since it uses less digits than its factorization.

663020004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38795 (or 38793 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 663020004 is about 25749.1748217297. The cubic root of 663020004 is about 871.9847249940.

The spelling of 663020004 in words is "six hundred sixty-three million, twenty thousand, four".