699427 has 2 divisors, whose sum is σ = 699428. Its totient is φ = 699426.

The previous prime is 699401. The next prime is 699437. The reversal of 699427 is 724996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 699427 - 2⁷ = 699299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (699437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349713 + 349714.

It is an arithmetic number, because the mean of its divisors is an integer number (349714).

2⁶⁹⁹⁴²⁷ is an apocalyptic number.

699427 is a deficient number, since it is larger than the sum of its proper divisors (1).

699427 is an equidigital number, since it uses as much as digits as its factorization.

699427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 699427 is about 836.3175234323. The cubic root of 699427 is about 88.7661664658.

It can be divided in two parts, 6994 and 27, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 699427 in words is "six hundred ninety-nine thousand, four hundred twenty-seven".