6078721 has 4 divisors (see below), whose sum is σ = 6631344. Its totient is φ = 5526100.

The previous prime is 6078713. The next prime is 6078731. The reversal of 6078721 is 1278706.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6078721 - 2³ = 6078713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6078731) 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, 276295 + ... + 276316.

It is an arithmetic number, because the mean of its divisors is an integer number (1657836).

Almost surely, 2^6078721 is an apocalyptic number.

It is an amenable number.

6078721 is a deficient number, since it is larger than the sum of its proper divisors (552623).

6078721 is a wasteful number, since it uses less digits than its factorization.

6078721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552622.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 6078721 is about 2465.5062360497. The cubic root of 6078721 is about 182.5033063766.

The spelling of 6078721 in words is "six million, seventy-eight thousand, seven hundred twenty-one".