47766636 has 72 divisors (see below), whose sum is σ = 125885760. Its totient is φ = 15259104.

The previous prime is 47766623. The next prime is 47766659. The reversal of 47766636 is 63666774.

It is a junction number, because it is equal to n+sod(n) for n = 47766591 and 47766600.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91071 + ... + 91593.

Almost surely, 2^47766636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47766636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62942880).

47766636 is an abundant number, since it is smaller than the sum of its proper divisors (78119124).

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

47766636 is a wasteful number, since it uses less digits than its factorization.

47766636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 630 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 47766636 is about 6911.3411144292. The cubic root of 47766636 is about 362.8342024533.

The spelling of 47766636 in words is "forty-seven million, seven hundred sixty-six thousand, six hundred thirty-six".