161870667 has 24 divisors (see below), whose sum is σ = 254108736. Its totient is φ = 91376208.

The previous prime is 161870659. The next prime is 161870669. The reversal of 161870667 is 766078161.

It is not a de Polignac number, because 161870667 - 2³ = 161870659 is a prime.

It is a super-2 number, since 2×161870667² = 52404225670049778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161870669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5568 + ... + 18834.

It is an arithmetic number, because the mean of its divisors is an integer number (10587864).

Almost surely, 2^161870667 is an apocalyptic number.

161870667 is a deficient number, since it is larger than the sum of its proper divisors (92238069).

161870667 is a wasteful number, since it uses less digits than its factorization.

161870667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13367 (or 13360 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 161870667 is about 12722.8403668363. The cubic root of 161870667 is about 544.9910690678.

The spelling of 161870667 in words is "one hundred sixty-one million, eight hundred seventy thousand, six hundred sixty-seven".