666835152 has 40 divisors (see below), whose sum is σ = 1764678720. Its totient is φ = 216856320.

The previous prime is 666835151. The next prime is 666835171. The reversal of 666835152 is 251538666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666835151) 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, 167452 + ... + 171387.

It is an arithmetic number, because the mean of its divisors is an integer number (44116968).

Almost surely, 2^666835152 is an apocalyptic number.

It is an amenable number.

666835152 is an abundant number, since it is smaller than the sum of its proper divisors (1097843568).

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

666835152 is a wasteful number, since it uses less digits than its factorization.

666835152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338891 (or 338885 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 666835152 is about 25823.1514730484. The cubic root of 666835152 is about 873.6540512854.

The spelling of 666835152 in words is "six hundred sixty-six million, eight hundred thirty-five thousand, one hundred fifty-two".