150668561 has 8 divisors (see below), whose sum is σ = 158187840. Its totient is φ = 143230032.

The previous prime is 150668533. The next prime is 150668579. The reversal of 150668561 is 165866051.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150668561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150668261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16346 + ... + 23843.

It is an arithmetic number, because the mean of its divisors is an integer number (19773480).

Almost surely, 2^150668561 is an apocalyptic number.

It is an amenable number.

150668561 is a deficient number, since it is larger than the sum of its proper divisors (7519279).

150668561 is a wasteful number, since it uses less digits than its factorization.

150668561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40375.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 150668561 is about 12274.7122573199. The cubic root of 150668561 is about 532.1175058904.

The spelling of 150668561 in words is "one hundred fifty million, six hundred sixty-eight thousand, five hundred sixty-one".