47681679 has 4 divisors (see below), whose sum is σ = 63575576. Its totient is φ = 31787784.

The previous prime is 47681677. The next prime is 47681681. The reversal of 47681679 is 97618674.

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

It is an interprime number because it is at equal distance from previous prime (47681677) and next prime (47681681).

It is not a de Polignac number, because 47681679 - 2¹ = 47681677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47681677) 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, 7946944 + ... + 7946949.

It is an arithmetic number, because the mean of its divisors is an integer number (15893894).

Almost surely, 2^47681679 is an apocalyptic number.

47681679 is a deficient number, since it is larger than the sum of its proper divisors (15893897).

47681679 is a wasteful number, since it uses less digits than its factorization.

47681679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15893896.

The product of its digits is 508032, while the sum is 48.

The square root of 47681679 is about 6905.1921769057. The cubic root of 47681679 is about 362.6189643629.

The spelling of 47681679 in words is "forty-seven million, six hundred eighty-one thousand, six hundred seventy-nine".