8640761398 has 8 divisors (see below), whose sum is σ = 13277267640. Its totient is φ = 4215005520.

The previous prime is 8640761369. The next prime is 8640761449. The reversal of 8640761398 is 8931670468.

It is a happy number.

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

It is a congruent number.

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, 52687488 + ... + 52687651.

It is an arithmetic number, because the mean of its divisors is an integer number (1659658455).

Almost surely, 2^8640761398 is an apocalyptic number.

8640761398 is a deficient number, since it is larger than the sum of its proper divisors (4636506242).

8640761398 is a wasteful number, since it uses less digits than its factorization.

8640761398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105375182.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 8640761398 is about 92955.6958878798. The cubic root of 8640761398 is about 2052.0314107353.

The spelling of 8640761398 in words is "eight billion, six hundred forty million, seven hundred sixty-one thousand, three hundred ninety-eight".