6890968749 has 8 divisors (see below), whose sum is σ = 10500523840. Its totient is φ = 3937696416.

The previous prime is 6890968699. The next prime is 6890968771. The reversal of 6890968749 is 9478690986.

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

It is not a de Polignac number, because 6890968749 - 2⁸ = 6890968493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6890968749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6890960749) 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, 164070664 + ... + 164070705.

It is an arithmetic number, because the mean of its divisors is an integer number (1312565480).

Almost surely, 2^6890968749 is an apocalyptic number.

It is an amenable number.

6890968749 is a deficient number, since it is larger than the sum of its proper divisors (3609555091).

6890968749 is a wasteful number, since it uses less digits than its factorization.

6890968749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328141379.

The product of its (nonzero) digits is 47029248, while the sum is 66.

The square root of 6890968749 is about 83011.8590865185. The cubic root of 6890968749 is about 1902.9472954810.

The spelling of 6890968749 in words is "six billion, eight hundred ninety million, nine hundred sixty-eight thousand, seven hundred forty-nine".