3247642547 has 4 divisors (see below), whose sum is σ = 3281123496. Its totient is φ = 3214161600.

The previous prime is 3247642543. The next prime is 3247642589. The reversal of 3247642547 is 7452467423.

3247642547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7452467423 = 757 ⋅9844739.

It is a cyclic number.

It is not a de Polignac number, because 3247642547 - 2² = 3247642543 is a prime.

It is a super-2 number, since 2×3247642547² = 21094364226169294418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3247642498 and 3247642507.

It is not an unprimeable number, because it can be changed into a prime (3247642543) 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, 16740329 + ... + 16740522.

It is an arithmetic number, because the mean of its divisors is an integer number (820280874).

Almost surely, 2^3247642547 is an apocalyptic number.

3247642547 is a deficient number, since it is larger than the sum of its proper divisors (33480949).

3247642547 is an equidigital number, since it uses as much as digits as its factorization.

3247642547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33480948.

The product of its digits is 1128960, while the sum is 44.

The square root of 3247642547 is about 56988.0912735284. The cubic root of 3247642547 is about 1480.8897965333.

The spelling of 3247642547 in words is "three billion, two hundred forty-seven million, six hundred forty-two thousand, five hundred forty-seven".