4670639 has 2 divisors, whose sum is σ = 4670640. Its totient is φ = 4670638.

The previous prime is 4670609. The next prime is 4670641. The reversal of 4670639 is 9360764.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4670639 is a prime.

Together with 4670641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4670599 and 4670608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4670609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2335319 + 2335320.

It is an arithmetic number, because the mean of its divisors is an integer number (2335320).

Almost surely, 2^4670639 is an apocalyptic number.

4670639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4670639 is an equidigital number, since it uses as much as digits as its factorization.

4670639 is an evil number, because the sum of its binary digits is even.

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

The square root of 4670639 is about 2161.1661204081. The cubic root of 4670639 is about 167.1573331718.

The spelling of 4670639 in words is "four million, six hundred seventy thousand, six hundred thirty-nine".