696907139 has 2 divisors, whose sum is σ = 696907140. Its totient is φ = 696907138.

The previous prime is 696907051. The next prime is 696907147. The reversal of 696907139 is 931709696.

696907139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 696907139 - 2¹² = 696903043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (696907339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348453569 + 348453570.

It is an arithmetic number, because the mean of its divisors is an integer number (348453570).

Almost surely, 2^696907139 is an apocalyptic number.

696907139 is a deficient number, since it is larger than the sum of its proper divisors (1).

696907139 is an equidigital number, since it uses as much as digits as its factorization.

696907139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 696907139 is about 26398.9988257131. The cubic root of 696907139 is about 886.5943740564.

The spelling of 696907139 in words is "six hundred ninety-six million, nine hundred seven thousand, one hundred thirty-nine".