43670 has 16 divisors (see below), whose sum is σ = 85968. Its totient is φ = 15840.

The previous prime is 43669. The next prime is 43691. The reversal of 43670 is 7634.

43670 = T₄ + T₅ + ... + T₆₃.

43670 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

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

43670 is strictly pandigital in base 6.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89 + ... + 308.

It is an arithmetic number, because the mean of its divisors is an integer number (5373).

2⁴³⁶⁷⁰ is an apocalyptic number.

43670 is a deficient number, since it is larger than the sum of its proper divisors (42298).

43670 is a wasteful number, since it uses less digits than its factorization.

43670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 43670 is about 208.9736825536. The cubic root of 43670 is about 35.2150030741.

The spelling of 43670 in words is "forty-three thousand, six hundred seventy".