161507667 has 8 divisors (see below), whose sum is σ = 228010896. Its totient is φ = 101338112.

The previous prime is 161507659. The next prime is 161507669. The reversal of 161507667 is 766705161.

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

It is a cyclic number.

It is not a de Polignac number, because 161507667 - 2³ = 161507659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161507669) 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, 1583358 + ... + 1583459.

It is an arithmetic number, because the mean of its divisors is an integer number (28501362).

Almost surely, 2^161507667 is an apocalyptic number.

161507667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

161507667 is a deficient number, since it is larger than the sum of its proper divisors (66503229).

161507667 is a wasteful number, since it uses less digits than its factorization.

161507667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166837.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 161507667 is about 12708.5666776391. The cubic root of 161507667 is about 544.5833776939.

The spelling of 161507667 in words is "one hundred sixty-one million, five hundred seven thousand, six hundred sixty-seven".