161033660 has 24 divisors (see below), whose sum is σ = 338409456. Its totient is φ = 64368000.

The previous prime is 161033647. The next prime is 161033669. The reversal of 161033660 is 66330161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161033669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52160 + ... + 55160.

It is an arithmetic number, because the mean of its divisors is an integer number (14100394).

Almost surely, 2^161033660 is an apocalyptic number.

161033660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161033660 is an abundant number, since it is smaller than the sum of its proper divisors (177375796).

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

161033660 is a wasteful number, since it uses less digits than its factorization.

161033660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693 (or 5691 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 161033660 is about 12689.9038609439. The cubic root of 161033660 is about 544.0500918046.

The spelling of 161033660 in words is "one hundred sixty-one million, thirty-three thousand, six hundred sixty".