8743745 has 4 divisors (see below), whose sum is σ = 10492500. Its totient is φ = 6994992.

The previous prime is 8743733. The next prime is 8743747. The reversal of 8743745 is 5473478.

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 3690241 + 5053504 = 1921^2 + 2248^2 .

It is a cyclic number.

It is not a de Polignac number, because 8743745 - 2⁶ = 8743681 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8743699 and 8743708.

It is not an unprimeable number, because it can be changed into a prime (8743747) 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, 874370 + ... + 874379.

It is an arithmetic number, because the mean of its divisors is an integer number (2623125).

Almost surely, 2^8743745 is an apocalyptic number.

It is an amenable number.

8743745 is a deficient number, since it is larger than the sum of its proper divisors (1748755).

8743745 is a wasteful number, since it uses less digits than its factorization.

8743745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748754.

The product of its digits is 94080, while the sum is 38.

The square root of 8743745 is about 2956.9824145571. The cubic root of 8743745 is about 206.0151511149.

The spelling of 8743745 in words is "eight million, seven hundred forty-three thousand, seven hundred forty-five".