7643613 has 8 divisors (see below), whose sum is σ = 10634688. Its totient is φ = 4874144.

The previous prime is 7643609. The next prime is 7643621. The reversal of 7643613 is 3163467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7643613 - 2² = 7643609 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55320 + ... + 55457.

It is an arithmetic number, because the mean of its divisors is an integer number (1329336).

Almost surely, 2^7643613 is an apocalyptic number.

It is an amenable number.

7643613 is a deficient number, since it is larger than the sum of its proper divisors (2991075).

7643613 is a wasteful number, since it uses less digits than its factorization.

7643613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110803.

The product of its digits is 9072, while the sum is 30.

The square root of 7643613 is about 2764.7084837284. The cubic root of 7643613 is about 196.9848820714.

It can be divided in two parts, 7643 and 613, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 7643613 in words is "seven million, six hundred forty-three thousand, six hundred thirteen".