8145709 has 8 divisors (see below), whose sum is σ = 9569952. Its totient is φ = 6835440.

The previous prime is 8145707. The next prime is 8145713. The reversal of 8145709 is 9075418.

It is a happy number.

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 8145709 - 2¹ = 8145707 is a prime.

It is a super-2 number, since 2×8145709² = 132705150225362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145707) 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, 28339 + ... + 28624.

It is an arithmetic number, because the mean of its divisors is an integer number (1196244).

Almost surely, 2^8145709 is an apocalyptic number.

It is an amenable number.

8145709 is a deficient number, since it is larger than the sum of its proper divisors (1424243).

8145709 is a wasteful number, since it uses less digits than its factorization.

8145709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56987.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 8145709 is about 2854.0688499053. The cubic root of 8145709 is about 201.2069434528.

The spelling of 8145709 in words is "eight million, one hundred forty-five thousand, seven hundred nine".