20683670 has 64 divisors (see below), whose sum is σ = 46033920. Its totient is φ = 6534528.

The previous prime is 20683669. The next prime is 20683673. The reversal of 20683670 is 7638602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20683673) 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, 46469 + ... + 46911.

It is an arithmetic number, because the mean of its divisors is an integer number (719280).

Almost surely, 2^20683670 is an apocalyptic number.

20683670 is an abundant number, since it is smaller than the sum of its proper divisors (25350250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20683670 is a wasteful number, since it uses less digits than its factorization.

20683670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 20683670 is about 4547.9302984984. The cubic root of 20683670 is about 274.5001166773.

The spelling of 20683670 in words is "twenty million, six hundred eighty-three thousand, six hundred seventy".