635640545 has 8 divisors (see below), whose sum is σ = 763221696. Its totient is φ = 508210416.

The previous prime is 635640541. The next prime is 635640547. The reversal of 635640545 is 545046536.

It is a happy number.

635640545 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 635640545 - 2² = 635640541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 635640499 and 635640508.

It is not an unprimeable number, because it can be changed into a prime (635640541) 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, 28277 + ... + 45506.

It is an arithmetic number, because the mean of its divisors is an integer number (95402712).

Almost surely, 2^635640545 is an apocalyptic number.

It is an amenable number.

635640545 is a deficient number, since it is larger than the sum of its proper divisors (127581151).

635640545 is a wasteful number, since it uses less digits than its factorization.

635640545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75511.

The product of its (nonzero) digits is 216000, while the sum is 38.

The square root of 635640545 is about 25211.9127596460. The cubic root of 635640545 is about 859.8127161134.

The spelling of 635640545 in words is "six hundred thirty-five million, six hundred forty thousand, five hundred forty-five".