163572666 has 8 divisors (see below), whose sum is σ = 327145344. Its totient is φ = 54524220.

The previous prime is 163572641. The next prime is 163572667. The reversal of 163572666 is 666275361.

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

163572666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (163572667) 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, 13631050 + ... + 13631061.

It is an arithmetic number, because the mean of its divisors is an integer number (40893168).

Almost surely, 2^163572666 is an apocalyptic number.

163572666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

163572666 is a wasteful number, since it uses less digits than its factorization.

163572666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27262116.

The product of its digits is 272160, while the sum is 42.

The square root of 163572666 is about 12789.5530023531. The cubic root of 163572666 is about 546.8945271765.

The spelling of 163572666 in words is "one hundred sixty-three million, five hundred seventy-two thousand, six hundred sixty-six".