666740007370 has 16 divisors (see below), whose sum is σ = 1201263165288. Its totient is φ = 266444635840.

The previous prime is 666740007347. The next prime is 666740007377. The reversal of 666740007370 is 73700047666.

It is a happy number.

666740007370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 526099256929 + 140640750441 = 725327^2 + 375021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 666740007370.

It is not an unprimeable number, because it can be changed into a prime (666740007377) 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, 31409749 + ... + 31430968.

Almost surely, 2^666740007370 is an apocalyptic number.

666740007370 is a deficient number, since it is larger than the sum of its proper divisors (534523157918).

666740007370 is a wasteful number, since it uses less digits than its factorization.

666740007370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62841785.

The product of its (nonzero) digits is 889056, while the sum is 46.

The spelling of 666740007370 in words is "six hundred sixty-six billion, seven hundred forty million, seven thousand, three hundred seventy".