7643045 has 4 divisors (see below), whose sum is σ = 9171660. Its totient is φ = 6114432.

The previous prime is 7643039. The next prime is 7643057. The reversal of 7643045 is 5403467.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2256004 + 5387041 = 1502^2 + 2321^2 .

It is a cyclic number.

It is not a de Polignac number, because 7643045 - 2⁴ = 7643029 is a prime.

It is a super-2 number, since 2×7643045² = 116832273744050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7642999 and 7643017.

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, 764300 + ... + 764309.

It is an arithmetic number, because the mean of its divisors is an integer number (2292915).

Almost surely, 2^7643045 is an apocalyptic number.

It is an amenable number.

7643045 is a deficient number, since it is larger than the sum of its proper divisors (1528615).

7643045 is a wasteful number, since it uses less digits than its factorization.

7643045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528614.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 7643045 is about 2764.6057585124. The cubic root of 7643045 is about 196.9800026082.

The spelling of 7643045 in words is "seven million, six hundred forty-three thousand, forty-five".