6408975197 has 4 divisors (see below), whose sum is σ = 6785973756. Its totient is φ = 6031976640.

The previous prime is 6408975191. The next prime is 6408975203. The reversal of 6408975197 is 7915798046.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6408975191) and next prime (6408975203).

It can be written as a sum of positive squares in 2 ways, for example, as 2453319961 + 3955655236 = 49531^2 + 62894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6408975197 is a prime.

It is a super-2 number, since 2×6408975197² = 82149926151522377618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6408975191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188499254 + ... + 188499287.

It is an arithmetic number, because the mean of its divisors is an integer number (1696493439).

Almost surely, 2^6408975197 is an apocalyptic number.

It is an amenable number.

6408975197 is a deficient number, since it is larger than the sum of its proper divisors (376998559).

6408975197 is a wasteful number, since it uses less digits than its factorization.

6408975197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376998558.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 6408975197 is about 80056.0753284846. The cubic root of 6408975197 is about 1857.5030275162.

The spelling of 6408975197 in words is "six billion, four hundred eight million, nine hundred seventy-five thousand, one hundred ninety-seven".