671162066 has 4 divisors (see below), whose sum is σ = 1006743102. Its totient is φ = 335581032.

The previous prime is 671162027. The next prime is 671162071. The reversal of 671162066 is 660261176.

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

It can be written as a sum of positive squares in only one way, i.e., 668998225 + 2163841 = 25865^2 + 1471^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167790515 + ... + 167790518.

Almost surely, 2^671162066 is an apocalyptic number.

671162066 is a deficient number, since it is larger than the sum of its proper divisors (335581036).

671162066 is a wasteful number, since it uses less digits than its factorization.

671162066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335581035.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 671162066 is about 25906.7957493782. The cubic root of 671162066 is about 875.5396142524.

The spelling of 671162066 in words is "six hundred seventy-one million, one hundred sixty-two thousand, sixty-six".