965721067 has 2 divisors, whose sum is σ = 965721068. Its totient is φ = 965721066.

The previous prime is 965721059. The next prime is 965721077. The reversal of 965721067 is 760127569.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 965721067 - 2³ = 965721059 is a prime.

It is not a weakly prime, because it can be changed into another prime (965721007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482860533 + 482860534.

It is an arithmetic number, because the mean of its divisors is an integer number (482860534).

Almost surely, 2^965721067 is an apocalyptic number.

965721067 is a deficient number, since it is larger than the sum of its proper divisors (1).

965721067 is an equidigital number, since it uses as much as digits as its factorization.

965721067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 965721067 is about 31076.0529507851. The cubic root of 965721067 is about 988.4405837528.

The spelling of 965721067 in words is "nine hundred sixty-five million, seven hundred twenty-one thousand, sixty-seven".