7643005 has 4 divisors (see below), whose sum is σ = 9171612. Its totient is φ = 6114400.

The previous prime is 7642963. The next prime is 7643017. The reversal of 7643005 is 5003467.

7643005 is digitally balanced in base 3, 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: 5003467 = 7 ⋅714781.

It can be written as a sum of positive squares in 2 ways, for example, as 3003289 + 4639716 = 1733^2 + 2154^2 .

It is not a de Polignac number, because 7643005 - 2⁹ = 7642493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764296 + ... + 764305.

It is an arithmetic number, because the mean of its divisors is an integer number (2292903).

Almost surely, 2^7643005 is an apocalyptic number.

It is an amenable number.

7643005 is a deficient number, since it is larger than the sum of its proper divisors (1528607).

7643005 is a wasteful number, since it uses less digits than its factorization.

7643005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528606.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 7643005 is about 2764.5985241984. The cubic root of 7643005 is about 196.9796589750.

The spelling of 7643005 in words is "seven million, six hundred forty-three thousand, five".