6638701 has 2 divisors, whose sum is σ = 6638702. Its totient is φ = 6638700.

The previous prime is 6638689. The next prime is 6638741. The reversal of 6638701 is 1078366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6625476 + 13225 = 2574^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 6638701 - 2⁵ = 6638669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6638741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3319350 + 3319351.

It is an arithmetic number, because the mean of its divisors is an integer number (3319351).

Almost surely, 2^6638701 is an apocalyptic number.

It is an amenable number.

6638701 is a deficient number, since it is larger than the sum of its proper divisors (1).

6638701 is an equidigital number, since it uses as much as digits as its factorization.

6638701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 6638701 is about 2576.5676781331. The cubic root of 6638701 is about 187.9436699351.

The spelling of 6638701 in words is "six million, six hundred thirty-eight thousand, seven hundred one".