6626761 has 4 divisors (see below), whose sum is σ = 6855300. Its totient is φ = 6398224.

The previous prime is 6626747. The next prime is 6626779. The reversal of 6626761 is 1676266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1676266 = 2 ⋅838133.

It can be written as a sum of positive squares in 2 ways, for example, as 5664400 + 962361 = 2380^2 + 981^2 .

It is a cyclic number.

It is not a de Polignac number, because 6626761 - 2⁵ = 6626729 is a prime.

It is a super-2 number, since 2×6626761² = 87827922702242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6626701) 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, 114226 + ... + 114283.

It is an arithmetic number, because the mean of its divisors is an integer number (1713825).

Almost surely, 2^6626761 is an apocalyptic number.

It is an amenable number.

6626761 is a deficient number, since it is larger than the sum of its proper divisors (228539).

6626761 is a wasteful number, since it uses less digits than its factorization.

6626761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228538.

The product of its digits is 18144, while the sum is 34.

The square root of 6626761 is about 2574.2495993979. The cubic root of 6626761 is about 187.8309272914.

The spelling of 6626761 in words is "six million, six hundred twenty-six thousand, seven hundred sixty-one".