6398275261 has 8 divisors (see below), whose sum is σ = 7742450880. Its totient is φ = 5161633728.

The previous prime is 6398275253. The next prime is 6398275271. The reversal of 6398275261 is 1625728936.

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

It is a cyclic number.

It is not a de Polignac number, because 6398275261 - 2³ = 6398275253 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 (6398275211) 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, 26883391 + ... + 26883628.

It is an arithmetic number, because the mean of its divisors is an integer number (967806360).

Almost surely, 2^6398275261 is an apocalyptic number.

It is an amenable number.

6398275261 is a deficient number, since it is larger than the sum of its proper divisors (1344175619).

6398275261 is a wasteful number, since it uses less digits than its factorization.

6398275261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53767043.

The product of its digits is 1088640, while the sum is 49.

The square root of 6398275261 is about 79989.2196549010. The cubic root of 6398275261 is about 1856.4687366008.

The spelling of 6398275261 in words is "six billion, three hundred ninety-eight million, two hundred seventy-five thousand, two hundred sixty-one".