66665046 has 32 divisors (see below), whose sum is σ = 156499200. Its totient is φ = 18531936.

The previous prime is 66665033. The next prime is 66665051. The reversal of 66665046 is 64056666.

It is a junction number, because it is equal to n+sod(n) for n = 66664995 and 66665013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19896 + ... + 23003.

It is an arithmetic number, because the mean of its divisors is an integer number (4890600).

Almost surely, 2^66665046 is an apocalyptic number.

66665046 is an abundant number, since it is smaller than the sum of its proper divisors (89834154).

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

66665046 is a wasteful number, since it uses less digits than its factorization.

66665046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42948.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 66665046 is about 8164.8665635147. The cubic root of 66665046 is about 405.4768472709.

The spelling of 66665046 in words is "sixty-six million, six hundred sixty-five thousand, forty-six".