34509681 has 24 divisors (see below), whose sum is σ = 54288000. Its totient is φ = 21040992.

The previous prime is 34509653. The next prime is 34509697. The reversal of 34509681 is 18690543.

It is not a de Polignac number, because 34509681 - 2⁶ = 34509617 is a prime.

It is a super-2 number, since 2×34509681² = 2381836165443522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (34509611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1480 + ... + 8438.

It is an arithmetic number, because the mean of its divisors is an integer number (2262000).

Almost surely, 2^34509681 is an apocalyptic number.

It is an amenable number.

34509681 is a deficient number, since it is larger than the sum of its proper divisors (19778319).

34509681 is a wasteful number, since it uses less digits than its factorization.

34509681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013 (or 7010 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 34509681 is about 5874.4941058784. The cubic root of 34509681 is about 325.5719506542.

It can be divided in two parts, 3450 and 9681, that added together give a palindrome (13131).

The spelling of 34509681 in words is "thirty-four million, five hundred nine thousand, six hundred eighty-one".