161279698 has 8 divisors (see below), whose sum is σ = 243404208. Its totient is φ = 80144964.

The previous prime is 161279693. The next prime is 161279747. The reversal of 161279698 is 896972161.

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

It is a super-2 number, since 2×161279698² = 52022281973942408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161279693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247036 + ... + 247687.

It is an arithmetic number, because the mean of its divisors is an integer number (30425526).

Almost surely, 2^161279698 is an apocalyptic number.

161279698 is a deficient number, since it is larger than the sum of its proper divisors (82124510).

161279698 is a wasteful number, since it uses less digits than its factorization.

161279698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494888.

The product of its digits is 326592, while the sum is 49.

The square root of 161279698 is about 12699.5944029721. The cubic root of 161279698 is about 544.3270295215.

The spelling of 161279698 in words is "one hundred sixty-one million, two hundred seventy-nine thousand, six hundred ninety-eight".