8555645397 has 8 divisors (see below), whose sum is σ = 12285029344. Its totient is φ = 5265012528.

The previous prime is 8555645389. The next prime is 8555645431. The reversal of 8555645397 is 7935465558.

8555645397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8555645397 - 2³ = 8555645389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8555645347) 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, 109687723 + ... + 109687800.

It is an arithmetic number, because the mean of its divisors is an integer number (1535628668).

Almost surely, 2^8555645397 is an apocalyptic number.

It is an amenable number.

8555645397 is a deficient number, since it is larger than the sum of its proper divisors (3729383947).

8555645397 is a wasteful number, since it uses less digits than its factorization.

8555645397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219375539.

The product of its digits is 22680000, while the sum is 57.

The square root of 8555645397 is about 92496.7318179405. The cubic root of 8555645397 is about 2045.2713055998.

The spelling of 8555645397 in words is "eight billion, five hundred fifty-five million, six hundred forty-five thousand, three hundred ninety-seven".