47657643 has 32 divisors (see below), whose sum is σ = 75513600. Its totient is φ = 26409600.

The previous prime is 47657629. The next prime is 47657657. The reversal of 47657643 is 34675674.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47657629) and next prime (47657657).

It is not a de Polignac number, because 47657643 - 2⁴ = 47657627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47657595 and 47657604.

It is not an unprimeable number, because it can be changed into a prime (47657243) 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, 16873 + ... + 19493.

It is an arithmetic number, because the mean of its divisors is an integer number (2359800).

Almost surely, 2^47657643 is an apocalyptic number.

47657643 is a deficient number, since it is larger than the sum of its proper divisors (27855957).

47657643 is a wasteful number, since it uses less digits than its factorization.

47657643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683.

The product of its digits is 423360, while the sum is 42.

The square root of 47657643 is about 6903.4515280402. The cubic root of 47657643 is about 362.5580228961.

The spelling of 47657643 in words is "forty-seven million, six hundred fifty-seven thousand, six hundred forty-three".