6301640665 has 24 divisors (see below), whose sum is σ = 8051160960. Its totient is φ = 4734014208.

The previous prime is 6301640651. The next prime is 6301640677. The reversal of 6301640665 is 5660461036.

It is not a de Polignac number, because 6301640665 - 2¹¹ = 6301638617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664326 + ... + 673744.

It is an arithmetic number, because the mean of its divisors is an integer number (335465040).

Almost surely, 2^6301640665 is an apocalyptic number.

It is an amenable number.

6301640665 is a deficient number, since it is larger than the sum of its proper divisors (1749520295).

6301640665 is a wasteful number, since it uses less digits than its factorization.

6301640665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9921 (or 9904 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 6301640665 is about 79382.8738771783. The cubic root of 6301640665 is about 1847.0750629021.

The spelling of 6301640665 in words is "six billion, three hundred one million, six hundred forty thousand, six hundred sixty-five".