47780664 has 32 divisors (see below), whose sum is σ = 119629440. Its totient is φ = 15903200.

The previous prime is 47780647. The next prime is 47780671. The reversal of 47780664 is 46608774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23779 + ... + 25709.

It is an arithmetic number, because the mean of its divisors is an integer number (3738420).

Almost surely, 2^47780664 is an apocalyptic number.

It is an amenable number.

47780664 is an abundant number, since it is smaller than the sum of its proper divisors (71848776).

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

47780664 is a wasteful number, since it uses less digits than its factorization.

47780664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 47780664 is about 6912.3558936154. The cubic root of 47780664 is about 362.8697177589.

The spelling of 47780664 in words is "forty-seven million, seven hundred eighty thousand, six hundred sixty-four".