6890259957 has 8 divisors (see below), whose sum is σ = 10499443776. Its totient is φ = 3937291392.

The previous prime is 6890259931. The next prime is 6890259989. The reversal of 6890259957 is 7599520986.

It is a happy number.

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

It is not a de Polignac number, because 6890259957 - 2⁷ = 6890259829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6890259957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6890251957) 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 7 ways as a sum of consecutive naturals, for example, 164053788 + ... + 164053829.

It is an arithmetic number, because the mean of its divisors is an integer number (1312430472).

Almost surely, 2^6890259957 is an apocalyptic number.

It is an amenable number.

6890259957 is a deficient number, since it is larger than the sum of its proper divisors (3609183819).

6890259957 is a wasteful number, since it uses less digits than its factorization.

6890259957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328107627.

The product of its (nonzero) digits is 12247200, while the sum is 60.

The square root of 6890259957 is about 83007.5897553953. The cubic root of 6890259957 is about 1902.8820487252.

The spelling of 6890259957 in words is "six billion, eight hundred ninety million, two hundred fifty-nine thousand, nine hundred fifty-seven".