649379 has 2 divisors, whose sum is σ = 649380. Its totient is φ = 649378.

The previous prime is 649361. The next prime is 649381. The reversal of 649379 is 973946.

649379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649379 - 2⁸ = 649123 is a prime.

Together with 649381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (649079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324689 + 324690.

It is an arithmetic number, because the mean of its divisors is an integer number (324690).

2⁶⁴⁹³⁷⁹ is an apocalyptic number.

649379 is a deficient number, since it is larger than the sum of its proper divisors (1).

649379 is an equidigital number, since it uses as much as digits as its factorization.

649379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 649379 is about 805.8405549487. The cubic root of 649379 is about 86.5963153604.

It can be divided in two parts, 64937 and 9, that added together give a palindrome (64946).

The spelling of 649379 in words is "six hundred forty-nine thousand, three hundred seventy-nine".