2672639 has 2 divisors, whose sum is σ = 2672640. Its totient is φ = 2672638.

The previous prime is 2672633. The next prime is 2672671. The reversal of 2672639 is 9362762.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2672639 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2672599 and 2672608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2672633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1336319 + 1336320.

It is an arithmetic number, because the mean of its divisors is an integer number (1336320).

2^2672639 is an apocalyptic number.

2672639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2672639 is an equidigital number, since it uses as much as digits as its factorization.

2672639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 2672639 is about 1634.8207852850. The cubic root of 2672639 is about 138.7757022970.

The spelling of 2672639 in words is "two million, six hundred seventy-two thousand, six hundred thirty-nine".