166270564 has 6 divisors (see below), whose sum is σ = 290973494. Its totient is φ = 83135280.

The previous prime is 166270547. The next prime is 166270583. The reversal of 166270564 is 465072661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107288164 + 58982400 = 10358^2 + 7680^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20783817 + ... + 20783824.

Almost surely, 2^166270564 is an apocalyptic number.

It is an amenable number.

166270564 is a deficient number, since it is larger than the sum of its proper divisors (124702930).

166270564 is a wasteful number, since it uses less digits than its factorization.

166270564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41567645 (or 41567643 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 166270564 is about 12894.5943712860. The cubic root of 166270564 is about 549.8848949205.

The spelling of 166270564 in words is "one hundred sixty-six million, two hundred seventy thousand, five hundred sixty-four".