666054152 has 32 divisors (see below), whose sum is σ = 1330003800. Its totient is φ = 311614464.

The previous prime is 666054149. The next prime is 666054161. The reversal of 666054152 is 251450666.

It can be written as a sum of positive squares in 4 ways, for example, as 664917796 + 1136356 = 25786^2 + 1066^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9374 + ... + 37682.

Almost surely, 2^666054152 is an apocalyptic number.

It is an amenable number.

666054152 is a deficient number, since it is larger than the sum of its proper divisors (663949648).

666054152 is a wasteful number, since it uses less digits than its factorization.

666054152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28505 (or 28501 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 666054152 is about 25808.0249534907. The cubic root of 666054152 is about 873.3128423347.

The spelling of 666054152 in words is "six hundred sixty-six million, fifty-four thousand, one hundred fifty-two".