635567 has 2 divisors, whose sum is σ = 635568. Its totient is φ = 635566.

The previous prime is 635563. The next prime is 635599. The reversal of 635567 is 765536.

It is an a-pointer prime, because the next prime (635599) can be obtained adding 635567 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 635567 - 2² = 635563 is a prime.

It is a super-2 number, since 2×635567² = 807890822978, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317783 + 317784.

It is an arithmetic number, because the mean of its divisors is an integer number (317784).

2⁶³⁵⁵⁶⁷ is an apocalyptic number.

635567 is a deficient number, since it is larger than the sum of its proper divisors (1).

635567 is an equidigital number, since it uses as much as digits as its factorization.

635567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 32.

The square root of 635567 is about 797.2245605850. The cubic root of 635567 is about 85.9779554098.

The spelling of 635567 in words is "six hundred thirty-five thousand, five hundred sixty-seven".