64263620 has 24 divisors (see below), whose sum is σ = 139308288. Its totient is φ = 24876000.

The previous prime is 64263611. The next prime is 64263659. The reversal of 64263620 is 2636246.

64263620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51206 + ... + 52445.

It is an arithmetic number, because the mean of its divisors is an integer number (5804512).

Almost surely, 2^64263620 is an apocalyptic number.

It is an amenable number.

64263620 is an abundant number, since it is smaller than the sum of its proper divisors (75044668).

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

64263620 is a wasteful number, since it uses less digits than its factorization.

64263620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103691 (or 103689 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 64263620 is about 8016.4593181778. The cubic root of 64263620 is about 400.5484559797.

Adding to 64263620 its reverse (2636246), we get a palindrome (66899866).

The spelling of 64263620 in words is "sixty-four million, two hundred sixty-three thousand, six hundred twenty".