663807234 has 16 divisors (see below), whose sum is σ = 1328927040. Its totient is φ = 221050320.

The previous prime is 663807233. The next prime is 663807239. The reversal of 663807234 is 432708366.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 663807192 and 663807201.

It is not an unprimeable number, because it can be changed into a prime (663807233) 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, 48054 + ... + 60305.

It is an arithmetic number, because the mean of its divisors is an integer number (83057940).

Almost surely, 2^663807234 is an apocalyptic number.

663807234 is an abundant number, since it is smaller than the sum of its proper divisors (665119806).

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

663807234 is a wasteful number, since it uses less digits than its factorization.

663807234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109385.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 663807234 is about 25764.4567961368. The cubic root of 663807234 is about 872.3297025341.

The spelling of 663807234 in words is "six hundred sixty-three million, eight hundred seven thousand, two hundred thirty-four".