6256661065 has 8 divisors (see below), whose sum is σ = 7525415808. Its totient is φ = 4993713840.

The previous prime is 6256661041. The next prime is 6256661071. The reversal of 6256661065 is 5601666526.

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

It is not a de Polignac number, because 6256661065 - 2¹³ = 6256652873 is a prime.

It is a Duffinian 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, 1449507 + ... + 1453816.

It is an arithmetic number, because the mean of its divisors is an integer number (940676976).

Almost surely, 2^6256661065 is an apocalyptic number.

It is an amenable number.

6256661065 is a deficient number, since it is larger than the sum of its proper divisors (1268754743).

6256661065 is a wasteful number, since it uses less digits than its factorization.

6256661065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903759.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 6256661065 is about 79099.0585595050. The cubic root of 6256661065 is about 1842.6699056024.

The spelling of 6256661065 in words is "six billion, two hundred fifty-six million, six hundred sixty-one thousand, sixty-five".