168550664 has 8 divisors (see below), whose sum is σ = 316032510. Its totient is φ = 84275328.

The previous prime is 168550661. The next prime is 168550667. The reversal of 168550664 is 466055861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (168550661) and next prime (168550667).

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 69388900 = 9958^2 + 8330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (168550661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10534409 + ... + 10534424.

Almost surely, 2^168550664 is an apocalyptic number.

It is an amenable number.

168550664 is a deficient number, since it is larger than the sum of its proper divisors (147481846).

168550664 is a wasteful number, since it uses less digits than its factorization.

168550664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21068839 (or 21068835 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 168550664 is about 12982.7063434401. The cubic root of 168550664 is about 552.3870508858.

The spelling of 168550664 in words is "one hundred sixty-eight million, five hundred fifty thousand, six hundred sixty-four".