666040152 has 32 divisors (see below), whose sum is σ = 1686182400. Its totient is φ = 219202464.

The previous prime is 666040087. The next prime is 666040153. The reversal of 666040152 is 251040666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666040153) 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, 173748 + ... + 177539.

It is an arithmetic number, because the mean of its divisors is an integer number (52693200).

Almost surely, 2^666040152 is an apocalyptic number.

It is an amenable number.

666040152 is an abundant number, since it is smaller than the sum of its proper divisors (1020142248).

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

666040152 is a wasteful number, since it uses less digits than its factorization.

666040152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351375 (or 351371 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 666040152 is about 25807.7537186017. The cubic root of 666040152 is about 873.3067234801.

The spelling of 666040152 in words is "six hundred sixty-six million, forty thousand, one hundred fifty-two".