663751086 has 16 divisors (see below), whose sum is σ = 1332403968. Its totient is φ = 220433400.

The previous prime is 663751037. The next prime is 663751087. The reversal of 663751086 is 680157366.

It is a super-3 number, since 3×663751086³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663751087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202480 + ... + 205731.

It is an arithmetic number, because the mean of its divisors is an integer number (83275248).

Almost surely, 2^663751086 is an apocalyptic number.

663751086 is an abundant number, since it is smaller than the sum of its proper divisors (668652882).

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

663751086 is a wasteful number, since it uses less digits than its factorization.

663751086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408487.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 663751086 is about 25763.3671324227. The cubic root of 663751086 is about 872.3051065638.

The spelling of 663751086 in words is "six hundred sixty-three million, seven hundred fifty-one thousand, eighty-six".