47656686 has 64 divisors (see below), whose sum is σ = 122964480. Its totient is φ = 11948160.

The previous prime is 47656681. The next prime is 47656711. The reversal of 47656686 is 68665674.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47656681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11620 + ... + 15176.

It is an arithmetic number, because the mean of its divisors is an integer number (1921320).

Almost surely, 2^47656686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47656686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61482240).

47656686 is an abundant number, since it is smaller than the sum of its proper divisors (75307794).

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

47656686 is a wasteful number, since it uses less digits than its factorization.

47656686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609.

The product of its digits is 1451520, while the sum is 48.

The square root of 47656686 is about 6903.3822145380. The cubic root of 47656686 is about 362.5555960706. Note that the first 4 decimals are identical.

It can be divided in two parts, 4765668 and 6, that added together give a palindrome (4765674).

The spelling of 47656686 in words is "forty-seven million, six hundred fifty-six thousand, six hundred eighty-six".