161434677 has 16 divisors (see below), whose sum is σ = 232352640. Its totient is φ = 99392832.

The previous prime is 161434667. The next prime is 161434699. The reversal of 161434677 is 776434161.

It is not a de Polignac number, because 161434677 - 2⁷ = 161434549 is a prime.

It is a super-2 number, since 2×161434677² = 52122309876188658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161434607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38338 + ... + 42339.

It is an arithmetic number, because the mean of its divisors is an integer number (14522040).

Almost surely, 2^161434677 is an apocalyptic number.

It is an amenable number.

161434677 is a deficient number, since it is larger than the sum of its proper divisors (70917963).

161434677 is a wasteful number, since it uses less digits than its factorization.

161434677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80732.

The product of its digits is 84672, while the sum is 39.

The square root of 161434677 is about 12705.6946681400. The cubic root of 161434677 is about 544.5013276569.

The spelling of 161434677 in words is "one hundred sixty-one million, four hundred thirty-four thousand, six hundred seventy-seven".