6680275381 has 4 divisors (see below), whose sum is σ = 7194142732. Its totient is φ = 6166408032.

The previous prime is 6680275369. The next prime is 6680275391. The reversal of 6680275381 is 1835720866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1983366225 + 4696909156 = 44535^2 + 68534^2 .

It is a cyclic number.

It is not a de Polignac number, because 6680275381 - 2⁹ = 6680274869 is a prime.

It is a super-2 number, since 2×6680275381² = 89252158331989390322, 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 (6680275331) 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, 256933656 + ... + 256933681.

It is an arithmetic number, because the mean of its divisors is an integer number (1798535683).

Almost surely, 2^6680275381 is an apocalyptic number.

It is an amenable number.

6680275381 is a deficient number, since it is larger than the sum of its proper divisors (513867351).

6680275381 is a wasteful number, since it uses less digits than its factorization.

6680275381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513867350.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 6680275381 is about 81732.9516229532. The cubic root of 6680275381 is about 1883.3518164126.

The spelling of 6680275381 in words is "six billion, six hundred eighty million, two hundred seventy-five thousand, three hundred eighty-one".