161660260 has 48 divisors (see below), whose sum is σ = 348687360. Its totient is φ = 62928000.

The previous prime is 161660221. The next prime is 161660267. The reversal of 161660260 is 62066161.

161660260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161660260² = 52268079326535200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161660267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214885 + ... + 215635.

It is an arithmetic number, because the mean of its divisors is an integer number (7264320).

Almost surely, 2^161660260 is an apocalyptic number.

161660260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161660260 is an abundant number, since it is smaller than the sum of its proper divisors (187027100).

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

161660260 is a wasteful number, since it uses less digits than its factorization.

161660260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 161660260 is about 12714.5688090474. The cubic root of 161660260 is about 544.7548317920.

The spelling of 161660260 in words is "one hundred sixty-one million, six hundred sixty thousand, two hundred sixty".