8740872506 has 4 divisors (see below), whose sum is σ = 13111308762. Its totient is φ = 4370436252.

The previous prime is 8740872463. The next prime is 8740872509. The reversal of 8740872506 is 6052780478.

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

It can be written as a sum of positive squares in only one way, i.e., 8447264281 + 293608225 = 91909^2 + 17135^2 .

It is a super-2 number, since 2×8740872506² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8740872509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2185218125 + ... + 2185218128.

Almost surely, 2^8740872506 is an apocalyptic number.

8740872506 is a deficient number, since it is larger than the sum of its proper divisors (4370436256).

8740872506 is a wasteful number, since it uses less digits than its factorization.

8740872506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370436255.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 8740872506 is about 93492.6334317309. The cubic root of 8740872506 is about 2059.9258862015.

The spelling of 8740872506 in words is "eight billion, seven hundred forty million, eight hundred seventy-two thousand, five hundred six".