161676 has 30 divisors (see below), whose sum is σ = 423500. Its totient is φ = 53784.

The previous prime is 161659. The next prime is 161683. The reversal of 161676 is 676161.

It is a super-2 number, since 2×161676² = 52278257952, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is an alternating number because its digits alternate between odd and even.

Its product of digits (1512) is a multiple of the sum of its prime divisors (504).

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75 + ... + 573.

2¹⁶¹⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211750).

161676 is an abundant number, since it is smaller than the sum of its proper divisors (261824).

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

161676 is a wasteful number, since it uses less digits than its factorization.

161676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 504 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 161676 is about 402.0895422664. The cubic root of 161676 is about 54.4772511179.

The spelling of 161676 in words is "one hundred sixty-one thousand, six hundred seventy-six".