869661803 has 2 divisors, whose sum is σ = 869661804. Its totient is φ = 869661802.

The previous prime is 869661761. The next prime is 869661823. The reversal of 869661803 is 308166968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869661803 - 2¹⁴ = 869645419 is a prime.

It is not a weakly prime, because it can be changed into another prime (869661823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434830901 + 434830902.

It is an arithmetic number, because the mean of its divisors is an integer number (434830902).

Almost surely, 2^869661803 is an apocalyptic number.

869661803 is a deficient number, since it is larger than the sum of its proper divisors (1).

869661803 is an equidigital number, since it uses as much as digits as its factorization.

869661803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 869661803 is about 29490.0288741805. The cubic root of 869661803 is about 954.5165551047.

The spelling of 869661803 in words is "eight hundred sixty-nine million, six hundred sixty-one thousand, eight hundred three".