967819561 has 2 divisors, whose sum is σ = 967819562. Its totient is φ = 967819560.

The previous prime is 967819547. The next prime is 967819577. The reversal of 967819561 is 165918769.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 963171225 + 4648336 = 31035^2 + 2156^2 .

It is a cyclic number.

It is not a de Polignac number, because 967819561 - 2¹⁷ = 967688489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 967819499 and 967819508.

It is not a weakly prime, because it can be changed into another prime (967819261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483909780 + 483909781.

It is an arithmetic number, because the mean of its divisors is an integer number (483909781).

Almost surely, 2^967819561 is an apocalyptic number.

It is an amenable number.

967819561 is a deficient number, since it is larger than the sum of its proper divisors (1).

967819561 is an equidigital number, since it uses as much as digits as its factorization.

967819561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 52.

The square root of 967819561 is about 31109.7984725070. The cubic root of 967819561 is about 989.1560201559.

The spelling of 967819561 in words is "nine hundred sixty-seven million, eight hundred nineteen thousand, five hundred sixty-one".