161676697 has 16 divisors (see below), whose sum is σ = 202366080. Its totient is φ = 125747712.

The previous prime is 161676673. The next prime is 161676709. The reversal of 161676697 is 796676161.

It is a cyclic number.

It is not a de Polignac number, because 161676697 - 2¹⁵ = 161643929 is a prime.

It is a super-2 number, since 2×161676697² = 52278708705659618, 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 161676697.

It is not an unprimeable number, because it can be changed into a prime (161676607) 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, 9688 + ... + 20425.

It is an arithmetic number, because the mean of its divisors is an integer number (12647880).

Almost surely, 2^161676697 is an apocalyptic number.

It is an amenable number.

161676697 is a deficient number, since it is larger than the sum of its proper divisors (40689383).

161676697 is a wasteful number, since it uses less digits than its factorization.

161676697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30192.

The product of its digits is 571536, while the sum is 49.

The square root of 161676697 is about 12715.2151771018. The cubic root of 161676697 is about 544.7732940323.

The spelling of 161676697 in words is "one hundred sixty-one million, six hundred seventy-six thousand, six hundred ninety-seven".