161027660 has 36 divisors (see below), whose sum is σ = 356908608. Its totient is φ = 61018272.

The previous prime is 161027653. The next prime is 161027677. The reversal of 161027660 is 66720161.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3932 + ... + 18371.

It is an arithmetic number, because the mean of its divisors is an integer number (9914128).

Almost surely, 2^161027660 is an apocalyptic number.

161027660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161027660 is an abundant number, since it is smaller than the sum of its proper divisors (195880948).

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

161027660 is a wasteful number, since it uses less digits than its factorization.

161027660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22350 (or 22329 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 161027660 is about 12689.6674503314. The cubic root of 161027660 is about 544.0433347471.

The spelling of 161027660 in words is "one hundred sixty-one million, twenty-seven thousand, six hundred sixty".