47765566 has 4 divisors (see below), whose sum is σ = 71648352. Its totient is φ = 23882782.

The previous prime is 47765539. The next prime is 47765569. The reversal of 47765566 is 66556774.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47765569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11941390 + ... + 11941393.

It is an arithmetic number, because the mean of its divisors is an integer number (17912088).

Almost surely, 2^47765566 is an apocalyptic number.

47765566 is a deficient number, since it is larger than the sum of its proper divisors (23882786).

47765566 is a wasteful number, since it uses less digits than its factorization.

47765566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23882785.

The product of its digits is 1058400, while the sum is 46.

The square root of 47765566 is about 6911.2637049964. The cubic root of 47765566 is about 362.8314932018.

The spelling of 47765566 in words is "forty-seven million, seven hundred sixty-five thousand, five hundred sixty-six".