8731745 has 8 divisors (see below), whose sum is σ = 11430720. Its totient is φ = 6350320.

The previous prime is 8731721. The next prime is 8731757. The reversal of 8731745 is 5471378.

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

It is not a de Polignac number, because 8731745 - 2¹⁴ = 8715361 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79325 + ... + 79434.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^8731745 is an apocalyptic number.

It is an amenable number.

8731745 is a deficient number, since it is larger than the sum of its proper divisors (2698975).

8731745 is a wasteful number, since it uses less digits than its factorization.

8731745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158775.

The product of its digits is 23520, while the sum is 35.

The square root of 8731745 is about 2954.9526222936. The cubic root of 8731745 is about 205.9208622404.

It can be divided in two parts, 873 and 1745, that multiplied together give a triangular number (1523385 = T₁₇₄₅).

The spelling of 8731745 in words is "eight million, seven hundred thirty-one thousand, seven hundred forty-five".