123698867 has 2 divisors, whose sum is σ = 123698868. Its totient is φ = 123698866.

The previous prime is 123698863. The next prime is 123698909. The reversal of 123698867 is 768896321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123698867 - 2² = 123698863 is a prime.

It is not a weakly prime, because it can be changed into another prime (123698863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61849433 + 61849434.

It is an arithmetic number, because the mean of its divisors is an integer number (61849434).

Almost surely, 2^123698867 is an apocalyptic number.

123698867 is a deficient number, since it is larger than the sum of its proper divisors (1).

123698867 is an equidigital number, since it uses as much as digits as its factorization.

123698867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 123698867 is about 11121.9992357489. Note that the first 3 decimals coincide. The cubic root of 123698867 is about 498.2591015803.

The spelling of 123698867 in words is "one hundred twenty-three million, six hundred ninety-eight thousand, eight hundred sixty-seven".