8639625842 has 8 divisors (see below), whose sum is σ = 12962514432. Its totient is φ = 4318787700.

The previous prime is 8639625781. The next prime is 8639625881. The reversal of 8639625842 is 2485269368.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502034 + ... + 518957.

It is an arithmetic number, because the mean of its divisors is an integer number (1620314304).

Almost surely, 2^8639625842 is an apocalyptic number.

8639625842 is a deficient number, since it is larger than the sum of its proper divisors (4322888590).

8639625842 is a wasteful number, since it uses less digits than its factorization.

8639625842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025224.

The product of its digits is 4976640, while the sum is 53.

The square root of 8639625842 is about 92949.5876376006. The cubic root of 8639625842 is about 2051.9415151594.

The spelling of 8639625842 in words is "eight billion, six hundred thirty-nine million, six hundred twenty-five thousand, eight hundred forty-two".