637349 has 2 divisors, whose sum is σ = 637350. Its totient is φ = 637348.

The previous prime is 637339. The next prime is 637369. The reversal of 637349 is 943736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 465124 + 172225 = 682^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 637349 - 2¹² = 633253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (637309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318674 + 318675.

It is an arithmetic number, because the mean of its divisors is an integer number (318675).

2⁶³⁷³⁴⁹ is an apocalyptic number.

It is an amenable number.

637349 is a deficient number, since it is larger than the sum of its proper divisors (1).

637349 is an equidigital number, since it uses as much as digits as its factorization.

637349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 32.

The square root of 637349 is about 798.3414056655. The cubic root of 637349 is about 86.0582352999.

The spelling of 637349 in words is "six hundred thirty-seven thousand, three hundred forty-nine".