161463660 has 24 divisors (see below), whose sum is σ = 452098416. Its totient is φ = 43056960.

The previous prime is 161463649. The next prime is 161463661. The reversal of 161463660 is 66364161.

It is not an unprimeable number, because it can be changed into a prime (161463661) 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, 1345471 + ... + 1345590.

It is an arithmetic number, because the mean of its divisors is an integer number (18837434).

Almost surely, 2^161463660 is an apocalyptic number.

161463660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161463660 is an abundant number, since it is smaller than the sum of its proper divisors (290634756).

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

161463660 is a wasteful number, since it uses less digits than its factorization.

161463660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691073 (or 2691071 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 161463660 is about 12706.8351685225. The cubic root of 161463660 is about 544.5339111925.

The spelling of 161463660 in words is "one hundred sixty-one million, four hundred sixty-three thousand, six hundred sixty".