2647397645 has 8 divisors (see below), whose sum is σ = 3188601600. Its totient is φ = 2110101840.

The previous prime is 2647397629. The next prime is 2647397657. The reversal of 2647397645 is 5467937462.

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

It is not a de Polignac number, because 2647397645 - 2⁴ = 2647397629 is a prime.

It is a super-3 number, since 3×2647397645³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 975545 + ... + 978254.

It is an arithmetic number, because the mean of its divisors is an integer number (398575200).

Almost surely, 2^2647397645 is an apocalyptic number.

It is an amenable number.

2647397645 is a deficient number, since it is larger than the sum of its proper divisors (541203955).

2647397645 is a wasteful number, since it uses less digits than its factorization.

2647397645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954075.

The product of its digits is 7620480, while the sum is 53.

The square root of 2647397645 is about 51452.8681902185. The cubic root of 2647397645 is about 1383.3743728409.

The spelling of 2647397645 in words is "two billion, six hundred forty-seven million, three hundred ninety-seven thousand, six hundred forty-five".