34221637 has 2 divisors, whose sum is σ = 34221638. Its totient is φ = 34221636.

The previous prime is 34221619. The next prime is 34221643. The reversal of 34221637 is 73612243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19236996 + 14984641 = 4386^2 + 3871^2 .

It is an emirp because it is prime and its reverse (73612243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34221637 - 2²³ = 25833029 is a prime.

It is a super-2 number, since 2×34221637² = 2342240877919538, 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 (34221617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17110818 + 17110819.

It is an arithmetic number, because the mean of its divisors is an integer number (17110819).

Almost surely, 2^34221637 is an apocalyptic number.

It is an amenable number.

34221637 is a deficient number, since it is larger than the sum of its proper divisors (1).

34221637 is an equidigital number, since it uses as much as digits as its factorization.

34221637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 28.

The square root of 34221637 is about 5849.9262388512. The cubic root of 34221637 is about 324.6635951054.

The spelling of 34221637 in words is "thirty-four million, two hundred twenty-one thousand, six hundred thirty-seven".