66452630 has 48 divisors (see below), whose sum is σ = 128375280. Its totient is φ = 24724224.

The previous prime is 66452627. The next prime is 66452669. The reversal of 66452630 is 3625466.

It is a Curzon number.

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, 910274 + ... + 910346.

It is an arithmetic number, because the mean of its divisors is an integer number (2674485).

Almost surely, 2^66452630 is an apocalyptic number.

66452630 is a deficient number, since it is larger than the sum of its proper divisors (61922650).

66452630 is a wasteful number, since it uses less digits than its factorization.

66452630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 66452630 is about 8151.8482566839. The cubic root of 66452630 is about 405.0457297345.

The spelling of 66452630 in words is "sixty-six million, four hundred fifty-two thousand, six hundred thirty".