635490645 has 16 divisors (see below), whose sum is σ = 1031962560. Its totient is φ = 333869184.

The previous prime is 635490641. The next prime is 635490649. The reversal of 635490645 is 546094536.

It is an interprime number because it is at equal distance from previous prime (635490641) and next prime (635490649).

It is not a de Polignac number, because 635490645 - 2² = 635490641 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 635490597 and 635490606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635490641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315160 + ... + 317169.

It is an arithmetic number, because the mean of its divisors is an integer number (64497660).

Almost surely, 2^635490645 is an apocalyptic number.

It is an amenable number.

635490645 is a deficient number, since it is larger than the sum of its proper divisors (396471915).

635490645 is a wasteful number, since it uses less digits than its factorization.

635490645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632404.

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 635490645 is about 25208.9397833388. The cubic root of 635490645 is about 859.7451223242.

The spelling of 635490645 in words is "six hundred thirty-five million, four hundred ninety thousand, six hundred forty-five".