161608701 has 16 divisors (see below), whose sum is σ = 220518144. Its totient is φ = 105228864.

The previous prime is 161608697. The next prime is 161608723. The reversal of 161608701 is 107806161.

It is a happy number.

It is not a de Polignac number, because 161608701 - 2² = 161608697 is a prime.

It is a super-2 number, since 2×161608701² = 52234744477814802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161608771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94611 + ... + 96303.

It is an arithmetic number, because the mean of its divisors is an integer number (13782384).

Almost surely, 2^161608701 is an apocalyptic number.

It is an amenable number.

161608701 is a deficient number, since it is larger than the sum of its proper divisors (58909443).

161608701 is a wasteful number, since it uses less digits than its factorization.

161608701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 161608701 is about 12712.5410913790. The cubic root of 161608701 is about 544.6969119691.

The spelling of 161608701 in words is "one hundred sixty-one million, six hundred eight thousand, seven hundred one".