8670742581 has 8 divisors (see below), whose sum is σ = 11750514784. Its totient is φ = 5685732720.

The previous prime is 8670742571. The next prime is 8670742649. The reversal of 8670742581 is 1852470768.

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

It is not a de Polignac number, because 8670742581 - 2¹⁵ = 8670709813 is a prime.

It is a super-2 number, since 2×8670742581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8670742581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8670742571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23690371 + ... + 23690736.

It is an arithmetic number, because the mean of its divisors is an integer number (1468814348).

Almost surely, 2^8670742581 is an apocalyptic number.

It is an amenable number.

8670742581 is a deficient number, since it is larger than the sum of its proper divisors (3079772203).

8670742581 is a wasteful number, since it uses less digits than its factorization.

8670742581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47381171.

The product of its (nonzero) digits is 752640, while the sum is 48.

The square root of 8670742581 is about 93116.8222234844. The cubic root of 8670742581 is about 2054.4020085640.

The spelling of 8670742581 in words is "eight billion, six hundred seventy million, seven hundred forty-two thousand, five hundred eighty-one".