161606534 has 16 divisors (see below), whose sum is σ = 250880640. Its totient is φ = 77993280.

The previous prime is 161606527. The next prime is 161606581. The reversal of 161606534 is 435606161.

161606534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161606534² = 52233343662986312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161606534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22172 + ... + 28544.

It is an arithmetic number, because the mean of its divisors is an integer number (15680040).

Almost surely, 2^161606534 is an apocalyptic number.

161606534 is a deficient number, since it is larger than the sum of its proper divisors (89274106).

161606534 is a wasteful number, since it uses less digits than its factorization.

161606534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 161606534 is about 12712.4558602970. The cubic root of 161606534 is about 544.6944773571.

The spelling of 161606534 in words is "one hundred sixty-one million, six hundred six thousand, five hundred thirty-four".