967665999 has 4 divisors (see below), whose sum is σ = 1290221336. Its totient is φ = 645110664.

The previous prime is 967665989. The next prime is 967666013. The reversal of 967665999 is 999566769.

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

It is not a de Polignac number, because 967665999 - 2⁷ = 967665871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (967665929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161277664 + ... + 161277669.

It is an arithmetic number, because the mean of its divisors is an integer number (322555334).

Almost surely, 2^967665999 is an apocalyptic number.

967665999 is a deficient number, since it is larger than the sum of its proper divisors (322555337).

967665999 is a wasteful number, since it uses less digits than its factorization.

967665999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322555336.

The product of its digits is 49601160, while the sum is 66.

The square root of 967665999 is about 31107.3303097518. The cubic root of 967665999 is about 989.1037015842.

The spelling of 967665999 in words is "nine hundred sixty-seven million, six hundred sixty-five thousand, nine hundred ninety-nine".