34686991 has 2 divisors, whose sum is σ = 34686992. Its totient is φ = 34686990.

The previous prime is 34686959. The next prime is 34687007. The reversal of 34686991 is 19968643.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 34686991 - 2⁵ = 34686959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34686931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17343495 + 17343496.

It is an arithmetic number, because the mean of its divisors is an integer number (17343496).

Almost surely, 2^34686991 is an apocalyptic number.

34686991 is a deficient number, since it is larger than the sum of its proper divisors (1).

34686991 is an equidigital number, since it uses as much as digits as its factorization.

34686991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 46.

The square root of 34686991 is about 5889.5662828429. The cubic root of 34686991 is about 326.1285922996.

The spelling of 34686991 in words is "thirty-four million, six hundred eighty-six thousand, nine hundred ninety-one".