34545643 has 4 divisors (see below), whose sum is σ = 37686168. Its totient is φ = 31405120.

The previous prime is 34545631. The next prime is 34545653. The reversal of 34545643 is 34654543.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34545643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34545599 and 34545608.

It is not an unprimeable number, because it can be changed into a prime (34545653) 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, 1570246 + ... + 1570267.

It is an arithmetic number, because the mean of its divisors is an integer number (9421542).

Almost surely, 2^34545643 is an apocalyptic number.

34545643 is a deficient number, since it is larger than the sum of its proper divisors (3140525).

34545643 is a wasteful number, since it uses less digits than its factorization.

34545643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140524.

The product of its digits is 86400, while the sum is 34.

The square root of 34545643 is about 5877.5541681893. The cubic root of 34545643 is about 325.6850025430.

Subtracting 34545643 from its reverse (34654543), we obtain a square (108900 = 330²).

The spelling of 34545643 in words is "thirty-four million, five hundred forty-five thousand, six hundred forty-three".