6881294581 has 16 divisors (see below), whose sum is σ = 8454389760. Its totient is φ = 5468923440.

The previous prime is 6881294531. The next prime is 6881294593. The reversal of 6881294581 is 1854921886.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6881294581 - 2¹¹ = 6881292533 is a prime.

It is a super-2 number, since 2×6881294581² = 94704430220999931122, 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 (6881294531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544165 + ... + 556666.

It is an arithmetic number, because the mean of its divisors is an integer number (528399360).

Almost surely, 2^6881294581 is an apocalyptic number.

It is an amenable number.

6881294581 is a deficient number, since it is larger than the sum of its proper divisors (1573095179).

6881294581 is a wasteful number, since it uses less digits than its factorization.

6881294581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100904.

The product of its digits is 1105920, while the sum is 52.

The square root of 6881294581 is about 82953.5688261813. The cubic root of 6881294581 is about 1902.0563683283.

The spelling of 6881294581 in words is "six billion, eight hundred eighty-one million, two hundred ninety-four thousand, five hundred eighty-one".