34681681 has 4 divisors (see below), whose sum is σ = 34784932. Its totient is φ = 34578432.

The previous prime is 34681667. The next prime is 34681727. The reversal of 34681681 is 18618643.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5683456 + 28998225 = 2384^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 34681681 - 2¹¹ = 34679633 is a prime.

It is a super-2 number, since 2×34681681² = 2405637993971522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34681681.

It is not an unprimeable number, because it can be changed into a prime (34681601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51120 + ... + 51793.

It is an arithmetic number, because the mean of its divisors is an integer number (8696233).

Almost surely, 2^34681681 is an apocalyptic number.

It is an amenable number.

34681681 is a deficient number, since it is larger than the sum of its proper divisors (103251).

34681681 is a wasteful number, since it uses less digits than its factorization.

34681681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103250.

The product of its digits is 27648, while the sum is 37.

The square root of 34681681 is about 5889.1154683874. The cubic root of 34681681 is about 326.1119498336. Note that the first 3 decimals are identical.

The spelling of 34681681 in words is "thirty-four million, six hundred eighty-one thousand, six hundred eighty-one".