63706840 has 16 divisors (see below), whose sum is σ = 143340480. Its totient is φ = 25482720.

The previous prime is 63706793. The next prime is 63706847. The reversal of 63706840 is 4860736.

63706840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63706840² = 8117122925571200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63706796 and 63706805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63706847) by changing a digit.

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, 796296 + ... + 796375.

It is an arithmetic number, because the mean of its divisors is an integer number (8958780).

Almost surely, 2^63706840 is an apocalyptic number.

It is an amenable number.

63706840 is an abundant number, since it is smaller than the sum of its proper divisors (79633640).

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

63706840 is a wasteful number, since it uses less digits than its factorization.

63706840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592682 (or 1592678 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 63706840 is about 7981.6564696810. The cubic root of 63706840 is about 399.3883150807.

It can be divided in two parts, 63706 and 840, that added together give a palindrome (64546).

The spelling of 63706840 in words is "sixty-three million, seven hundred six thousand, eight hundred forty".