47678 has 8 divisors (see below), whose sum is σ = 73920. Its totient is φ = 23040.

The previous prime is 47659. The next prime is 47681. The reversal of 47678 is 87674.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323 + ... + 446.

It is an arithmetic number, because the mean of its divisors is an integer number (9240).

2⁴⁷⁶⁷⁸ is an apocalyptic number.

47678 is a deficient number, since it is larger than the sum of its proper divisors (26242).

47678 is a wasteful number, since it uses less digits than its factorization.

47678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802.

The product of its digits is 9408, while the sum is 32.

The square root of 47678 is about 218.3529253296. The cubic root of 47678 is about 36.2609637863.

It can be divided in two parts, 476 and 78, that multiplied together give a triangular number (37128 = T₂₇₂).

The spelling of 47678 in words is "forty-seven thousand, six hundred seventy-eight".