66706607624 has 16 divisors (see below), whose sum is σ = 130512928320. Its totient is φ = 31903160080.

The previous prime is 66706607609. The next prime is 66706607641. The reversal of 66706607624 is 42670660766.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181267772 + ... + 181268139.

It is an arithmetic number, because the mean of its divisors is an integer number (8157058020).

Almost surely, 2^66706607624 is an apocalyptic number.

It is an amenable number.

66706607624 is a deficient number, since it is larger than the sum of its proper divisors (63806320696).

66706607624 is a wasteful number, since it uses less digits than its factorization.

66706607624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362535940 (or 362535936 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

It can be divided in two parts, 6670660762 and 4, that added together give a palindrome (6670660766).

The spelling of 66706607624 in words is "sixty-six billion, seven hundred six million, six hundred seven thousand, six hundred twenty-four".