63640302 has 32 divisors (see below), whose sum is σ = 140241024. Its totient is φ = 19092000.

The previous prime is 63640279. The next prime is 63640307. The reversal of 63640302 is 20304636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63640307) 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, 1893 + ... + 11439.

It is an arithmetic number, because the mean of its divisors is an integer number (4382532).

Almost surely, 2^63640302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63640302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70120512).

63640302 is an abundant number, since it is smaller than the sum of its proper divisors (76600722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63640302 is a wasteful number, since it uses less digits than its factorization.

63640302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9664.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 63640302 is about 7977.4871983601. The cubic root of 63640302 is about 399.2492208751.

Adding to 63640302 its reverse (20304636), we get a palindrome (83944938).

The spelling of 63640302 in words is "sixty-three million, six hundred forty thousand, three hundred two".