6697397815 has 8 divisors (see below), whose sum is σ = 8070505920. Its totient is φ = 5335499232.

The previous prime is 6697397813. The next prime is 6697397851. The reversal of 6697397815 is 5187937966.

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 6697397815 - 2¹ = 6697397813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697397813) 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, 2801064 + ... + 2803453.

It is an arithmetic number, because the mean of its divisors is an integer number (1008813240).

Almost surely, 2^6697397815 is an apocalyptic number.

6697397815 is a deficient number, since it is larger than the sum of its proper divisors (1373108105).

6697397815 is a wasteful number, since it uses less digits than its factorization.

6697397815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5604761.

The product of its digits is 17146080, while the sum is 61.

The square root of 6697397815 is about 81837.6308002621. The cubic root of 6697397815 is about 1884.9595372975.

The spelling of 6697397815 in words is "six billion, six hundred ninety-seven million, three hundred ninety-seven thousand, eight hundred fifteen".