636716 has 6 divisors (see below), whose sum is σ = 1114260. Its totient is φ = 318356.

The previous prime is 636697. The next prime is 636719. The reversal of 636716 is 617636.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (636719) by changing a digit.

636716 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 79586 + ... + 79593.

It is an arithmetic number, because the mean of its divisors is an integer number (185710).

2⁶³⁶⁷¹⁶ is an apocalyptic number.

It is an amenable number.

636716 is a deficient number, since it is larger than the sum of its proper divisors (477544).

636716 is a wasteful number, since it uses less digits than its factorization.

636716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159183 (or 159181 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 636716 is about 797.9448602504. The cubic root of 636716 is about 86.0297355259.

The spelling of 636716 in words is "six hundred thirty-six thousand, seven hundred sixteen".