161674 has 8 divisors (see below), whose sum is σ = 244260. Its totient is φ = 80256.

The previous prime is 161659. The next prime is 161683. The reversal of 161674 is 476161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 154449 + 7225 = 393^2 + 85^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161674² = 52276964552, which contains 22 as substring.

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

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282 + ... + 634.

2¹⁶¹⁶⁷⁴ is an apocalyptic number.

161674 is a deficient number, since it is larger than the sum of its proper divisors (82586).

161674 is a wasteful number, since it uses less digits than its factorization.

161674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584.

The product of its digits is 1008, while the sum is 25.

The square root of 161674 is about 402.0870552505. The cubic root of 161674 is about 54.4770264815.

The spelling of 161674 in words is "one hundred sixty-one thousand, six hundred seventy-four".