63649133 has 4 divisors (see below), whose sum is σ = 64233180. Its totient is φ = 63065088.

The previous prime is 63649123. The next prime is 63649153. The reversal of 63649133 is 33194636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26646244 + 37002889 = 5162^2 + 6083^2 .

It is a cyclic number.

It is not a de Polignac number, because 63649133 - 2²⁰ = 62600557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63649093 and 63649102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63649123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291860 + ... + 292077.

It is an arithmetic number, because the mean of its divisors is an integer number (16058295).

Almost surely, 2^63649133 is an apocalyptic number.

It is an amenable number.

63649133 is a deficient number, since it is larger than the sum of its proper divisors (584047).

63649133 is a wasteful number, since it uses less digits than its factorization.

63649133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584046.

The product of its digits is 34992, while the sum is 35.

The square root of 63649133 is about 7978.0406742508. The cubic root of 63649133 is about 399.2676871964.

The spelling of 63649133 in words is "sixty-three million, six hundred forty-nine thousand, one hundred thirty-three".