66280620307 has 8 divisors (see below), whose sum is σ = 72320106672. Its totient is φ = 60243463200.

The previous prime is 66280620257. The next prime is 66280620331. The reversal of 66280620307 is 70302608266.

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

It is a cyclic number.

It is not a de Polignac number, because 66280620307 - 2⁷ = 66280620179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66280620307.

It is not an unprimeable number, because it can be changed into a prime (66280620347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522544 + ... + 636877.

It is an arithmetic number, because the mean of its divisors is an integer number (9040013334).

Almost surely, 2^66280620307 is an apocalyptic number.

66280620307 is a deficient number, since it is larger than the sum of its proper divisors (6039486365).

66280620307 is a wasteful number, since it uses less digits than its factorization.

66280620307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164629.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 66280620307 in words is "sixty-six billion, two hundred eighty million, six hundred twenty thousand, three hundred seven".