635677 has 6 divisors (see below), whose sum is σ = 739518. Its totient is φ = 544824.

The previous prime is 635659. The next prime is 635689. The reversal of 635677 is 776536.

It can be written as a sum of positive squares in only one way, i.e., 337561 + 298116 = 581^2 + 546^2 .

It is not a de Polignac number, because 635677 - 2¹¹ = 633629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635617) 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 in 5 ways as a sum of consecutive naturals, for example, 6438 + ... + 6535.

It is an arithmetic number, because the mean of its divisors is an integer number (123253).

2⁶³⁵⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

635677 is a deficient number, since it is larger than the sum of its proper divisors (103841).

635677 is a wasteful number, since it uses less digits than its factorization.

635677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12987 (or 12980 counting only the distinct ones).

The product of its digits is 26460, while the sum is 34.

The square root of 635677 is about 797.2935469449. The cubic root of 635677 is about 85.9829153010.

The spelling of 635677 in words is "six hundred thirty-five thousand, six hundred seventy-seven".