161607659 has 2 divisors, whose sum is σ = 161607660. Its totient is φ = 161607658.

The previous prime is 161607647. The next prime is 161607671. The reversal of 161607659 is 956706161.

It is a balanced prime because it is at equal distance from previous prime (161607647) and next prime (161607671).

It is a cyclic number.

It is not a de Polignac number, because 161607659 - 2²⁰ = 160559083 is a prime.

It is a super-2 number, since 2×161607659² = 52234070894920562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161607679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80803829 + 80803830.

It is an arithmetic number, because the mean of its divisors is an integer number (80803830).

Almost surely, 2^161607659 is an apocalyptic number.

161607659 is a deficient number, since it is larger than the sum of its proper divisors (1).

161607659 is an equidigital number, since it uses as much as digits as its factorization.

161607659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 161607659 is about 12712.5001081613. The cubic root of 161607659 is about 544.6957412908.

The spelling of 161607659 in words is "one hundred sixty-one million, six hundred seven thousand, six hundred fifty-nine".