787636 has 12 divisors (see below), whose sum is σ = 1386112. Its totient is φ = 391608.

The previous prime is 787621. The next prime is 787639. The reversal of 787636 is 636787.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 787595 and 787604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451 + ... + 1333.

2⁷⁸⁷⁶³⁶ is an apocalyptic number.

It is an amenable number.

787636 is a deficient number, since it is larger than the sum of its proper divisors (598476).

787636 is a wasteful number, since it uses less digits than its factorization.

787636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1108 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 787636 is about 887.4885914760. The cubic root of 787636 is about 92.3510532038.

The spelling of 787636 in words is "seven hundred eighty-seven thousand, six hundred thirty-six".