161669324 has 6 divisors (see below), whose sum is σ = 282921324. Its totient is φ = 80834660.

The previous prime is 161669281. The next prime is 161669357. The reversal of 161669324 is 423966161.

It is a super-2 number, since 2×161669324² = 52273940645233952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20208662 + ... + 20208669.

It is an arithmetic number, because the mean of its divisors is an integer number (47153554).

Almost surely, 2^161669324 is an apocalyptic number.

It is an amenable number.

161669324 is a deficient number, since it is larger than the sum of its proper divisors (121252000).

161669324 is a wasteful number, since it uses less digits than its factorization.

161669324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40417335 (or 40417333 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 161669324 is about 12714.9252455530. The cubic root of 161669324 is about 544.7650127429.

The spelling of 161669324 in words is "one hundred sixty-one million, six hundred sixty-nine thousand, three hundred twenty-four".