161104887 has 12 divisors (see below), whose sum is σ = 233538864. Its totient is φ = 107019360.

The previous prime is 161104873. The next prime is 161104897. The reversal of 161104887 is 788401161.

161104887 is a `hidden beast` number, since 161 + 10 + 488 + 7 = 666.

It is not a de Polignac number, because 161104887 - 2¹¹ = 161102839 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161104807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29323 + ... + 34380.

It is an arithmetic number, because the mean of its divisors is an integer number (19461572).

Almost surely, 2^161104887 is an apocalyptic number.

161104887 is a deficient number, since it is larger than the sum of its proper divisors (72433977).

161104887 is a wasteful number, since it uses less digits than its factorization.

161104887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63990 (or 63987 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 161104887 is about 12692.7099943235. The cubic root of 161104887 is about 544.1302931405.

The spelling of 161104887 in words is "one hundred sixty-one million, one hundred four thousand, eight hundred eighty-seven".