6640367795 has 8 divisors (see below), whose sum is σ = 7971580320. Its totient is φ = 5310201600.

The previous prime is 6640367791. The next prime is 6640367849. The reversal of 6640367795 is 5977630466.

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

It is not a de Polignac number, because 6640367795 - 2² = 6640367791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6640367791) 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, 247550 + ... + 273059.

It is an arithmetic number, because the mean of its divisors is an integer number (996447540).

Almost surely, 2^6640367795 is an apocalyptic number.

6640367795 is a deficient number, since it is larger than the sum of its proper divisors (1331212525).

6640367795 is a wasteful number, since it uses less digits than its factorization.

6640367795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523165.

The product of its (nonzero) digits is 5715360, while the sum is 53.

The square root of 6640367795 is about 81488.4519119120. The cubic root of 6640367795 is about 1879.5939777888.

The spelling of 6640367795 in words is "six billion, six hundred forty million, three hundred sixty-seven thousand, seven hundred ninety-five".