34640581 has 2 divisors, whose sum is σ = 34640582. Its totient is φ = 34640580.

The previous prime is 34640561. The next prime is 34640603. The reversal of 34640581 is 18504643.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24591681 + 10048900 = 4959^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 34640581 - 2¹⁹ = 34116293 is a prime.

It is a super-2 number, since 2×34640581² = 2399939704035122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34640561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17320290 + 17320291.

It is an arithmetic number, because the mean of its divisors is an integer number (17320291).

Almost surely, 2^34640581 is an apocalyptic number.

It is an amenable number.

34640581 is a deficient number, since it is larger than the sum of its proper divisors (1).

34640581 is an equidigital number, since it uses as much as digits as its factorization.

34640581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 34640581 is about 5885.6249455771. The cubic root of 34640581 is about 325.9830777722.

The spelling of 34640581 in words is "thirty-four million, six hundred forty thousand, five hundred eighty-one".