6571907997 has 8 divisors (see below), whose sum is σ = 8799208320. Its totient is φ = 4362939840.

The previous prime is 6571907971. The next prime is 6571908019. The reversal of 6571907997 is 7997091756.

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

It is not a de Polignac number, because 6571907997 - 2¹⁸ = 6571645853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6571907997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6571907497) 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, 4582204 + ... + 4583637.

It is an arithmetic number, because the mean of its divisors is an integer number (1099901040).

Almost surely, 2^6571907997 is an apocalyptic number.

It is an amenable number.

6571907997 is a deficient number, since it is larger than the sum of its proper divisors (2227300323).

6571907997 is a wasteful number, since it uses less digits than its factorization.

6571907997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9166083.

The product of its (nonzero) digits is 7501410, while the sum is 60.

The square root of 6571907997 is about 81067.3053517878. The cubic root of 6571907997 is about 1873.1123399477.

The spelling of 6571907997 in words is "six billion, five hundred seventy-one million, nine hundred seven thousand, nine hundred ninety-seven".