876969661 has 2 divisors, whose sum is σ = 876969662. Its totient is φ = 876969660.

The previous prime is 876969647. The next prime is 876969677. The reversal of 876969661 is 166969678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865477561 + 11492100 = 29419^2 + 3390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-876969661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 876969596 and 876969605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (876969601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438484830 + 438484831.

It is an arithmetic number, because the mean of its divisors is an integer number (438484831).

Almost surely, 2^876969661 is an apocalyptic number.

It is an amenable number.

876969661 is a deficient number, since it is larger than the sum of its proper divisors (1).

876969661 is an equidigital number, since it uses as much as digits as its factorization.

876969661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 58.

The square root of 876969661 is about 29613.6735478731. The cubic root of 876969661 is about 957.1827346814.

The spelling of 876969661 in words is "eight hundred seventy-six million, nine hundred sixty-nine thousand, six hundred sixty-one".