161694000 has 240 divisors, whose sum is σ = 609065184. Its totient is φ = 39744000.

The previous prime is 161693989. The next prime is 161694007. The reversal of 161694000 is 496161.

161694000 is a `hidden beast` number, since 1 + 616 + 9 + 40 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×161694000² = 52289899272000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161694007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 233655 + ... + 234345.

Almost surely, 2^161694000 is an apocalyptic number.

161694000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161694000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304532592).

161694000 is an abundant number, since it is smaller than the sum of its proper divisors (447371184).

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

161694000 is a wasteful number, since it uses less digits than its factorization.

161694000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 161694000 is about 12715.8955642141. The cubic root of 161694000 is about 544.7927276226.

The spelling of 161694000 in words is "one hundred sixty-one million, six hundred ninety-four thousand".