47651636 has 12 divisors (see below), whose sum is σ = 83505828. Its totient is φ = 23792832.

The previous prime is 47651633. The next prime is 47651651. The reversal of 47651636 is 63615674.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37283236 + 10368400 = 6106^2 + 3220^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47651636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47651633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4841 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (6958819).

Almost surely, 2^47651636 is an apocalyptic number.

It is an amenable number.

47651636 is a deficient number, since it is larger than the sum of its proper divisors (35854192).

47651636 is a wasteful number, since it uses less digits than its factorization.

47651636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16498 (or 16496 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 47651636 is about 6903.0164421070. The cubic root of 47651636 is about 362.5427894000.

The spelling of 47651636 in words is "forty-seven million, six hundred fifty-one thousand, six hundred thirty-six".