6881257007 has 4 divisors (see below), whose sum is σ = 6881753136. Its totient is φ = 6880760880.

The previous prime is 6881256997. The next prime is 6881257039. The reversal of 6881257007 is 7007521886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7007521886 = 2 ⋅3503760943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6881257007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881257057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226643 + ... + 255204.

It is an arithmetic number, because the mean of its divisors is an integer number (1720438284).

Almost surely, 2^6881257007 is an apocalyptic number.

6881257007 is a deficient number, since it is larger than the sum of its proper divisors (496129).

6881257007 is a wasteful number, since it uses less digits than its factorization.

6881257007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496128.

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 6881257007 is about 82953.3423497812. The cubic root of 6881257007 is about 1902.0529063830.

The spelling of 6881257007 in words is "six billion, eight hundred eighty-one million, two hundred fifty-seven thousand, seven".