666607052 has 12 divisors (see below), whose sum is σ = 1166745216. Its totient is φ = 333251280.

The previous prime is 666607037. The next prime is 666607057. The reversal of 666607052 is 250706666.

It is a super-2 number, since 2×666607052² = 888729923552261408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666606997 and 666607015.

It is not an unprimeable number, because it can be changed into a prime (666607057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36758 + ... + 51810.

It is an arithmetic number, because the mean of its divisors is an integer number (97228768).

Almost surely, 2^666607052 is an apocalyptic number.

It is an amenable number.

666607052 is a deficient number, since it is larger than the sum of its proper divisors (500138164).

666607052 is a wasteful number, since it uses less digits than its factorization.

666607052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26128 (or 26126 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 666607052 is about 25818.7345158511. The cubic root of 666607052 is about 873.5544248560.

The spelling of 666607052 in words is "six hundred sixty-six million, six hundred seven thousand, fifty-two".