66563070 has 48 divisors (see below), whose sum is σ = 185837328. Its totient is φ = 15214080.

The previous prime is 66563059. The next prime is 66563083. The reversal of 66563070 is 7036566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21171 + ... + 24110.

It is an arithmetic number, because the mean of its divisors is an integer number (3871611).

Almost surely, 2^66563070 is an apocalyptic number.

66563070 is an abundant number, since it is smaller than the sum of its proper divisors (119274258).

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

66563070 is a wasteful number, since it uses less digits than its factorization.

66563070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45305 (or 45298 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 66563070 is about 8158.6193684961. The cubic root of 66563070 is about 405.2699922002.

The spelling of 66563070 in words is "sixty-six million, five hundred sixty-three thousand, seventy".