8502721964 has 24 divisors (see below), whose sum is σ = 16299844176. Its totient is φ = 3848832000.

The previous prime is 8502721963. The next prime is 8502722021. The reversal of 8502721964 is 4691272058.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (8502721963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390317 + ... + 411524.

It is an arithmetic number, because the mean of its divisors is an integer number (679160174).

Almost surely, 2^8502721964 is an apocalyptic number.

It is an amenable number.

8502721964 is a deficient number, since it is larger than the sum of its proper divisors (7797122212).

8502721964 is a wasteful number, since it uses less digits than its factorization.

8502721964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802097 (or 802095 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 8502721964 is about 92210.2053137287. The cubic root of 8502721964 is about 2041.0453731650.

The spelling of 8502721964 in words is "eight billion, five hundred two million, seven hundred twenty-one thousand, nine hundred sixty-four".