665759022 has 8 divisors (see below), whose sum is σ = 1331518056. Its totient is φ = 221919672.

The previous prime is 665759021. The next prime is 665759053. The reversal of 665759022 is 220957566.

It is a sphenic number, since it is the product of 3 distinct primes.

665759022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665759021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55479913 + ... + 55479924.

It is an arithmetic number, because the mean of its divisors is an integer number (166439757).

Almost surely, 2^665759022 is an apocalyptic number.

665759022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

665759022 is a wasteful number, since it uses less digits than its factorization.

665759022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110959842.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 665759022 is about 25802.3065248051. The cubic root of 665759022 is about 873.1838343572.

The spelling of 665759022 in words is "six hundred sixty-five million, seven hundred fifty-nine thousand, twenty-two".