161587674 has 24 divisors (see below), whose sum is σ = 351891540. Its totient is φ = 53587968.

The previous prime is 161587633. The next prime is 161587687. The reversal of 161587674 is 476785161.

161587674 is a `hidden beast` number, since 1 + 6 + 1 + 587 + 67 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 110565225 + 51022449 = 10515^2 + 7143^2 .

It is a super-2 number, since 2×161587674² = 52221152777460552, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 19239 + ... + 26330.

Almost surely, 2^161587674 is an apocalyptic number.

161587674 is an abundant number, since it is smaller than the sum of its proper divisors (190303866).

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

161587674 is a wasteful number, since it uses less digits than its factorization.

161587674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45774 (or 45771 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 161587674 is about 12711.7140465006. The cubic root of 161587674 is about 544.6732873362.

It can be divided in two parts, 161587 and 674, that added together give a palindrome (162261).

The spelling of 161587674 in words is "one hundred sixty-one million, five hundred eighty-seven thousand, six hundred seventy-four".