47705691 has 32 divisors (see below), whose sum is σ = 72230400. Its totient is φ = 27751680.

The previous prime is 47705687. The next prime is 47705701. The reversal of 47705691 is 19650774.

It is not a de Polignac number, because 47705691 - 2² = 47705687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47705191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108450 + ... + 108888.

It is an arithmetic number, because the mean of its divisors is an integer number (2257200).

Almost surely, 2^47705691 is an apocalyptic number.

47705691 is a deficient number, since it is larger than the sum of its proper divisors (24524709).

47705691 is a wasteful number, since it uses less digits than its factorization.

47705691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 47705691 is about 6906.9306497170. The cubic root of 47705691 is about 362.6798245336.

The spelling of 47705691 in words is "forty-seven million, seven hundred five thousand, six hundred ninety-one".