161660968 has 32 divisors (see below), whose sum is σ = 364651200. Its totient is φ = 65636352.

The previous prime is 161660963. The next prime is 161660969. The reversal of 161660968 is 869066161.

It is a happy number.

It is a super-2 number, since 2×161660968² = 52268537149394048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161660963) 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, 74905 + ... + 77032.

It is an arithmetic number, because the mean of its divisors is an integer number (11395350).

Almost surely, 2^161660968 is an apocalyptic number.

It is an amenable number.

161660968 is an abundant number, since it is smaller than the sum of its proper divisors (202990232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161660968 is a wasteful number, since it uses less digits than its factorization.

161660968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151969 (or 151965 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 161660968 is about 12714.5966510936. The cubic root of 161660968 is about 544.7556270521.

The spelling of 161660968 in words is "one hundred sixty-one million, six hundred sixty thousand, nine hundred sixty-eight".