66463645 has 8 divisors (see below), whose sum is σ = 79925760. Its totient is φ = 53058000.

The previous prime is 66463633. The next prime is 66463651. The reversal of 66463645 is 54636466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66463645 - 2⁵ = 66463613 is a prime.

It is a super-2 number, since 2×66463645² = 8834832213372050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66463598 and 66463607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11481 + ... + 16270.

It is an arithmetic number, because the mean of its divisors is an integer number (9990720).

Almost surely, 2^66463645 is an apocalyptic number.

It is an amenable number.

66463645 is a deficient number, since it is larger than the sum of its proper divisors (13462115).

66463645 is a wasteful number, since it uses less digits than its factorization.

66463645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28235.

The product of its digits is 311040, while the sum is 40.

The square root of 66463645 is about 8152.5238423448. The cubic root of 66463645 is about 405.0681082429.

The spelling of 66463645 in words is "sixty-six million, four hundred sixty-three thousand, six hundred forty-five".