161098704 has 120 divisors (see below), whose sum is σ = 496134912. Its totient is φ = 48487680.

The previous prime is 161098699. The next prime is 161098727. The reversal of 161098704 is 407890161.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 87069 + ... + 88899.

Almost surely, 2^161098704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161098704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248067456).

161098704 is an abundant number, since it is smaller than the sum of its proper divisors (335036208).

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

161098704 is a wasteful number, since it uses less digits than its factorization.

161098704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 161098704 is about 12692.4664269794. The cubic root of 161098704 is about 544.1233320426.

The spelling of 161098704 in words is "one hundred sixty-one million, ninety-eight thousand, seven hundred four".