3673639 has 2 divisors, whose sum is σ = 3673640. Its totient is φ = 3673638.

The previous prime is 3673613. The next prime is 3673651. The reversal of 3673639 is 9363763.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3673639 - 2⁹ = 3673127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3673598 and 3673607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3673609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1836819 + 1836820.

It is an arithmetic number, because the mean of its divisors is an integer number (1836820).

Almost surely, 2^3673639 is an apocalyptic number.

3673639 is a deficient number, since it is larger than the sum of its proper divisors (1).

3673639 is an equidigital number, since it uses as much as digits as its factorization.

3673639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 37.

The square root of 3673639 is about 1916.6739420152. The cubic root of 3673639 is about 154.2998458952.

The spelling of 3673639 in words is "three million, six hundred seventy-three thousand, six hundred thirty-nine".