636040345 has 8 divisors (see below), whose sum is σ = 763481664. Its totient is φ = 508676784.

The previous prime is 636040343. The next prime is 636040373. The reversal of 636040345 is 543040636.

636040345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 636040345 - 2¹ = 636040343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636040343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402 + ... + 35668.

It is an arithmetic number, because the mean of its divisors is an integer number (95435208).

Almost surely, 2^636040345 is an apocalyptic number.

It is an amenable number.

636040345 is a deficient number, since it is larger than the sum of its proper divisors (127441319).

636040345 is a wasteful number, since it uses less digits than its factorization.

636040345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38879.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 636040345 is about 25219.8403048076. The cubic root of 636040345 is about 859.9929443265.

The spelling of 636040345 in words is "six hundred thirty-six million, forty thousand, three hundred forty-five".