6887290331 has 4 divisors (see below), whose sum is σ = 7055273064. Its totient is φ = 6719307600.

The previous prime is 6887290313. The next prime is 6887290337. The reversal of 6887290331 is 1330927886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330927886 = 2 ⋅665463943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6887290331 is a prime.

It is a super-2 number, since 2×6887290331² = 94869536206972179122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6887290337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83991305 + ... + 83991386.

It is an arithmetic number, because the mean of its divisors is an integer number (1763818266).

Almost surely, 2^6887290331 is an apocalyptic number.

6887290331 is a deficient number, since it is larger than the sum of its proper divisors (167982733).

6887290331 is a wasteful number, since it uses less digits than its factorization.

6887290331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167982732.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 6887290331 is about 82989.7001500789. The cubic root of 6887290331 is about 1902.6086357212.

The spelling of 6887290331 in words is "six billion, eight hundred eighty-seven million, two hundred ninety thousand, three hundred thirty-one".