47661644 has 12 divisors (see below), whose sum is σ = 83869968. Its totient is φ = 23698800.

The previous prime is 47661643. The next prime is 47661701. The reversal of 47661644 is 44616674.

It is a junction number, because it is equal to n+sod(n) for n = 47661598 and 47661607.

It is not an unprimeable number, because it can be changed into a prime (47661643) 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, 32192 + ... + 33639.

It is an arithmetic number, because the mean of its divisors is an integer number (6989164).

Almost surely, 2^47661644 is an apocalyptic number.

It is an amenable number.

47661644 is a deficient number, since it is larger than the sum of its proper divisors (36208324).

47661644 is a wasteful number, since it uses less digits than its factorization.

47661644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66016 (or 66014 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 47661644 is about 6903.7413045392. The cubic root of 47661644 is about 362.5681685514.

The spelling of 47661644 in words is "forty-seven million, six hundred sixty-one thousand, six hundred forty-four".