666700670340 has 96 divisors (see below), whose sum is σ = 2074302639360. Its totient is φ = 177776322048.

The previous prime is 666700670333. The next prime is 666700670371. The reversal of 666700670340 is 43076007666.

666700670340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14293737 + ... + 14340303.

It is an arithmetic number, because the mean of its divisors is an integer number (21607319160).

Almost surely, 2^666700670340 is an apocalyptic number.

666700670340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

666700670340 is an abundant number, since it is smaller than the sum of its proper divisors (1407601969020).

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

666700670340 is a wasteful number, since it uses less digits than its factorization.

666700670340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73098 (or 73090 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The spelling of 666700670340 in words is "six hundred sixty-six billion, seven hundred million, six hundred seventy thousand, three hundred forty".