161676806 has 4 divisors (see below), whose sum is σ = 242515212. Its totient is φ = 80838402.

The previous prime is 161676799. The next prime is 161676841. The reversal of 161676806 is 608676161.

161676806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×161676806² = 52278779196723272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40419200 + ... + 40419203.

It is an arithmetic number, because the mean of its divisors is an integer number (60628803).

Almost surely, 2^161676806 is an apocalyptic number.

161676806 is a deficient number, since it is larger than the sum of its proper divisors (80838406).

161676806 is an equidigital number, since it uses as much as digits as its factorization.

161676806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80838405.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 161676806 is about 12715.2194633046. The cubic root of 161676806 is about 544.7734164583.

The spelling of 161676806 in words is "one hundred sixty-one million, six hundred seventy-six thousand, eight hundred six".