6581379 has 8 divisors (see below), whose sum is σ = 10028800. Its totient is φ = 3760776.

The previous prime is 6581371. The next prime is 6581387. The reversal of 6581379 is 9731856.

It is an interprime number because it is at equal distance from previous prime (6581371) and next prime (6581387).

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

It is not a de Polignac number, because 6581379 - 2³ = 6581371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6581371) 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, 156679 + ... + 156720.

It is an arithmetic number, because the mean of its divisors is an integer number (1253600).

Almost surely, 2^6581379 is an apocalyptic number.

6581379 is a deficient number, since it is larger than the sum of its proper divisors (3447421).

6581379 is a wasteful number, since it uses less digits than its factorization.

6581379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313409.

The product of its digits is 45360, while the sum is 39.

The square root of 6581379 is about 2565.4198486797. The cubic root of 6581379 is about 187.4011710287.

The spelling of 6581379 in words is "six million, five hundred eighty-one thousand, three hundred seventy-nine".