161035684 has 6 divisors (see below), whose sum is σ = 281812454. Its totient is φ = 80517840.

The previous prime is 161035661. The next prime is 161035709. The reversal of 161035684 is 486530161.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 108618084 + 52417600 = 10422^2 + 7240^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20129457 + ... + 20129464.

Almost surely, 2^161035684 is an apocalyptic number.

It is an amenable number.

161035684 is a deficient number, since it is larger than the sum of its proper divisors (120776770).

161035684 is a wasteful number, since it uses less digits than its factorization.

161035684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40258925 (or 40258923 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 161035684 is about 12689.9836091305. The cubic root of 161035684 is about 544.0523711475.

The spelling of 161035684 in words is "one hundred sixty-one million, thirty-five thousand, six hundred eighty-four".