161678614 has 8 divisors (see below), whose sum is σ = 243059400. Its totient is φ = 80658816.

The previous prime is 161678611. The next prime is 161678633. The reversal of 161678614 is 416876161.

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

It is a super-2 number, since 2×161678614² = 52279948449921992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161678611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89124 + ... + 90919.

It is an arithmetic number, because the mean of its divisors is an integer number (30382425).

Almost surely, 2^161678614 is an apocalyptic number.

161678614 is a deficient number, since it is larger than the sum of its proper divisors (81380786).

161678614 is a wasteful number, since it uses less digits than its factorization.

161678614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180494.

The product of its digits is 48384, while the sum is 40.

The square root of 161678614 is about 12715.2905590081. The cubic root of 161678614 is about 544.7754471488.

The spelling of 161678614 in words is "one hundred sixty-one million, six hundred seventy-eight thousand, six hundred fourteen".