161602560 has 352 divisors, whose sum is σ = 660280320. Its totient is φ = 36716544.

The previous prime is 161602549. The next prime is 161602583. The reversal of 161602560 is 65206161.

It is a happy number.

161602560 is a `hidden beast` number, since 1 + 6 + 1 + 602 + 56 + 0 = 666.

It is a super-2 number, since 2×161602560² = 52230774797107200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967597 + ... + 967763.

Almost surely, 2^161602560 is an apocalyptic number.

161602560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161602560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330140160).

161602560 is an abundant number, since it is smaller than the sum of its proper divisors (498677760).

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

161602560 is a wasteful number, since it uses less digits than its factorization.

161602560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 161602560 is about 12712.2995559419. The cubic root of 161602560 is about 544.6900125343.

The spelling of 161602560 in words is "one hundred sixty-one million, six hundred two thousand, five hundred sixty".