686926433 has 2 divisors, whose sum is σ = 686926434. Its totient is φ = 686926432.

The previous prime is 686926421. The next prime is 686926459. The reversal of 686926433 is 334629686.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373919569 + 313006864 = 19337^2 + 17692^2 .

It is a cyclic number.

It is not a de Polignac number, because 686926433 - 2⁴ = 686926417 is a prime.

It is not a weakly prime, because it can be changed into another prime (686626433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343463216 + 343463217.

It is an arithmetic number, because the mean of its divisors is an integer number (343463217).

Almost surely, 2^686926433 is an apocalyptic number.

It is an amenable number.

686926433 is a deficient number, since it is larger than the sum of its proper divisors (1).

686926433 is an equidigital number, since it uses as much as digits as its factorization.

686926433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 47.

The square root of 686926433 is about 26209.2814285321. The cubic root of 686926433 is about 882.3415741742.

The spelling of 686926433 in words is "six hundred eighty-six million, nine hundred twenty-six thousand, four hundred thirty-three".