47686691 has 16 divisors (see below), whose sum is σ = 52953600. Its totient is φ = 42670368.

The previous prime is 47686687. The next prime is 47686693. The reversal of 47686691 is 19668674.

It is a happy number.

47686691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47686691 - 2² = 47686687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47686693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60200 + ... + 60986.

It is an arithmetic number, because the mean of its divisors is an integer number (3309600).

Almost surely, 2^47686691 is an apocalyptic number.

47686691 is a deficient number, since it is larger than the sum of its proper divisors (5266909).

47686691 is a wasteful number, since it uses less digits than its factorization.

47686691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938.

The product of its digits is 435456, while the sum is 47.

The square root of 47686691 is about 6905.5550826852. Note that the first 3 decimals coincide. The cubic root of 47686691 is about 362.6316693306.

The spelling of 47686691 in words is "forty-seven million, six hundred eighty-six thousand, six hundred ninety-one".