6398270765 has 4 divisors (see below), whose sum is σ = 7677924924. Its totient is φ = 5118616608.

The previous prime is 6398270759. The next prime is 6398270777. The reversal of 6398270765 is 5670728936.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4251431209 + 2146839556 = 65203^2 + 46334^2 .

It is a cyclic number.

It is not a de Polignac number, because 6398270765 - 2⁶ = 6398270701 is a prime.

It is a Duffinian number.

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, 639827072 + ... + 639827081.

It is an arithmetic number, because the mean of its divisors is an integer number (1919481231).

Almost surely, 2^6398270765 is an apocalyptic number.

It is an amenable number.

6398270765 is a deficient number, since it is larger than the sum of its proper divisors (1279654159).

6398270765 is a wasteful number, since it uses less digits than its factorization.

6398270765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279654158.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The square root of 6398270765 is about 79989.1915511090. The cubic root of 6398270765 is about 1856.4683017604.

The spelling of 6398270765 in words is "six billion, three hundred ninety-eight million, two hundred seventy thousand, seven hundred sixty-five".