686903023 has 2 divisors, whose sum is σ = 686903024. Its totient is φ = 686903022.

The previous prime is 686902967. The next prime is 686903069. The reversal of 686903023 is 320309686.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686903023 - 2¹⁷ = 686771951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686903123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343451511 + 343451512.

It is an arithmetic number, because the mean of its divisors is an integer number (343451512).

Almost surely, 2^686903023 is an apocalyptic number.

686903023 is a deficient number, since it is larger than the sum of its proper divisors (1).

686903023 is an equidigital number, since it uses as much as digits as its factorization.

686903023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 686903023 is about 26208.8348272105. The cubic root of 686903023 is about 882.3315508539.

The spelling of 686903023 in words is "six hundred eighty-six million, nine hundred three thousand, twenty-three".