2639701 has 2 divisors, whose sum is σ = 2639702. Its totient is φ = 2639700.

The previous prime is 2639699. The next prime is 2639711. The reversal of 2639701 is 1079362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1782225 + 857476 = 1335^2 + 926^2 .

It is a cyclic number.

It is not a de Polignac number, because 2639701 - 2¹ = 2639699 is a prime.

Together with 2639699, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2639701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2639711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319850 + 1319851.

It is an arithmetic number, because the mean of its divisors is an integer number (1319851).

2^2639701 is an apocalyptic number.

It is an amenable number.

2639701 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639701 is an equidigital number, since it uses as much as digits as its factorization.

2639701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 2639701 is about 1624.7156674323. The cubic root of 2639701 is about 138.2032466847.

The spelling of 2639701 in words is "two million, six hundred thirty-nine thousand, seven hundred one".