166663562 has 8 divisors (see below), whose sum is σ = 269225796. Its totient is φ = 76921632.

The previous prime is 166663561. The next prime is 166663583. The reversal of 166663562 is 265366661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165148201 + 1515361 = 12851^2 + 1231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (166663561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3205043 + ... + 3205094.

Almost surely, 2^166663562 is an apocalyptic number.

166663562 is a deficient number, since it is larger than the sum of its proper divisors (102562234).

166663562 is a wasteful number, since it uses less digits than its factorization.

166663562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410152.

The product of its digits is 233280, while the sum is 41.

The square root of 166663562 is about 12909.8242435751. The cubic root of 166663562 is about 550.3177910001.

The spelling of 166663562 in words is "one hundred sixty-six million, six hundred sixty-three thousand, five hundred sixty-two".