665167082 has 4 divisors (see below), whose sum is σ = 997750626. Its totient is φ = 332583540.

The previous prime is 665167079. The next prime is 665167091. The reversal of 665167082 is 280761566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 280761566 = 2 ⋅140380783.

It can be written as a sum of positive squares in only one way, i.e., 664041361 + 1125721 = 25769^2 + 1061^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166291769 + ... + 166291772.

Almost surely, 2^665167082 is an apocalyptic number.

665167082 is a deficient number, since it is larger than the sum of its proper divisors (332583544).

665167082 is a wasteful number, since it uses less digits than its factorization.

665167082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332583543.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 665167082 is about 25790.8332940213. The cubic root of 665167082 is about 872.9249690697.

The spelling of 665167082 in words is "six hundred sixty-five million, one hundred sixty-seven thousand, eighty-two".