165561714 has 12 divisors (see below), whose sum is σ = 358717086. Its totient is φ = 55187232.

The previous prime is 165561707. The next prime is 165561719. The reversal of 165561714 is 417165561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 165559689 + 2025 = 12867^2 + 45^2 .

It is a super-2 number, since 2×165561714² = 54821362285235592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165561719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4598919 + ... + 4598954.

Almost surely, 2^165561714 is an apocalyptic number.

165561714 is an abundant number, since it is smaller than the sum of its proper divisors (193155372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165561714 is a wasteful number, since it uses less digits than its factorization.

165561714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197881 (or 9197878 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 165561714 is about 12867.0786894306. The cubic root of 165561714 is about 549.1023528398.

The spelling of 165561714 in words is "one hundred sixty-five million, five hundred sixty-one thousand, seven hundred fourteen".