161698496 has 28 divisors (see below), whose sum is σ = 322002912. Its totient is φ = 80563968.

The previous prime is 161698483. The next prime is 161698513. The reversal of 161698496 is 694896161.

161698496 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161698496² = 52292807217324032, which contains 22 as substring.

It is an unprimeable number.

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, 14441 + ... + 23063.

It is an arithmetic number, because the mean of its divisors is an integer number (11500104).

Almost surely, 2^161698496 is an apocalyptic number.

161698496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161698496 is a deficient number, since it is larger than the sum of its proper divisors (160304416).

161698496 is an equidigital number, since it uses as much as digits as its factorization.

161698496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8928 (or 8918 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 161698496 is about 12716.0723495897. The cubic root of 161698496 is about 544.7977770068.

The spelling of 161698496 in words is "one hundred sixty-one million, six hundred ninety-eight thousand, four hundred ninety-six".