161675197 has 8 divisors (see below), whose sum is σ = 162938880. Its totient is φ = 160416240.

The previous prime is 161675179. The next prime is 161675233. The reversal of 161675197 is 791576161.

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-161675197 is a prime.

It is a super-2 number, since 2×161675197² = 52277738649977618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161675167) 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, 96388 + ... + 98050.

It is an arithmetic number, because the mean of its divisors is an integer number (20367360).

Almost surely, 2^161675197 is an apocalyptic number.

It is an amenable number.

161675197 is a deficient number, since it is larger than the sum of its proper divisors (1263683).

161675197 is a wasteful number, since it uses less digits than its factorization.

161675197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363.

The product of its digits is 79380, while the sum is 43.

The square root of 161675197 is about 12715.1561925129. The cubic root of 161675197 is about 544.7716092658.

The spelling of 161675197 in words is "one hundred sixty-one million, six hundred seventy-five thousand, one hundred ninety-seven".