705199879 has 2 divisors, whose sum is σ = 705199880. Its totient is φ = 705199878.

The previous prime is 705199867. The next prime is 705199889. The reversal of 705199879 is 978991507.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 705199879 - 2²⁷ = 570982151 is a prime.

It is a super-2 number, since 2×705199879² = 994613738683229282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705199819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352599939 + 352599940.

It is an arithmetic number, because the mean of its divisors is an integer number (352599940).

Almost surely, 2^705199879 is an apocalyptic number.

705199879 is a deficient number, since it is larger than the sum of its proper divisors (1).

705199879 is an equidigital number, since it uses as much as digits as its factorization.

705199879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 55.

The square root of 705199879 is about 26555.5997672807. The cubic root of 705199879 is about 890.0971484241.

The spelling of 705199879 in words is "seven hundred five million, one hundred ninety-nine thousand, eight hundred seventy-nine".