650172166 has 8 divisors (see below), whose sum is σ = 1114580880. Its totient is φ = 278645208.

The previous prime is 650172163. The next prime is 650172179. The reversal of 650172166 is 661271056.

It is a happy number.

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

It is a super-2 number, since 2×650172166² = 845447690882263112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650172161) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 23220421 + ... + 23220448.

It is an arithmetic number, because the mean of its divisors is an integer number (139322610).

Almost surely, 2^650172166 is an apocalyptic number.

650172166 is a deficient number, since it is larger than the sum of its proper divisors (464408714).

650172166 is a wasteful number, since it uses less digits than its factorization.

650172166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46440878.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 650172166 is about 25498.4737974648. The cubic root of 650172166 is about 866.3155790621.

The spelling of 650172166 in words is "six hundred fifty million, one hundred seventy-two thousand, one hundred sixty-six".