63812740 has 12 divisors (see below), whose sum is σ = 134006796. Its totient is φ = 25525088.

The previous prime is 63812737. The next prime is 63812759. The reversal of 63812740 is 4721836.

63812740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50211396 + 13601344 = 7086^2 + 3688^2 .

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 3 ways as a sum of consecutive naturals, for example, 1595299 + ... + 1595338.

It is an arithmetic number, because the mean of its divisors is an integer number (11167233).

Almost surely, 2^63812740 is an apocalyptic number.

It is an amenable number.

63812740 is an abundant number, since it is smaller than the sum of its proper divisors (70194056).

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

63812740 is a wasteful number, since it uses less digits than its factorization.

63812740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190646 (or 3190644 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 63812740 is about 7988.2876763422. The cubic root of 63812740 is about 399.6094938865.

The spelling of 63812740 in words is "sixty-three million, eight hundred twelve thousand, seven hundred forty".