677636 has 6 divisors (see below), whose sum is σ = 1185870. Its totient is φ = 338816.

The previous prime is 677627. The next prime is 677639. The reversal of 677636 is 636776.

It can be written as a sum of positive squares in only one way, i.e., 640000 + 37636 = 800^2 + 194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 677596 and 677605.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 677636.

It is not an unprimeable number, because it can be changed into a prime (677639) by changing a digit.

677636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84701 + ... + 84708.

It is an arithmetic number, because the mean of its divisors is an integer number (197645).

2⁶⁷⁷⁶³⁶ is an apocalyptic number.

It is an amenable number.

677636 is a deficient number, since it is larger than the sum of its proper divisors (508234).

677636 is a wasteful number, since it uses less digits than its factorization.

677636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169413 (or 169411 counting only the distinct ones).

The product of its digits is 31752, while the sum is 35.

The square root of 677636 is about 823.1864916287. The cubic root of 677636 is about 87.8345721334.

The spelling of 677636 in words is "six hundred seventy-seven thousand, six hundred thirty-six".