66674070340 has 12 divisors (see below), whose sum is σ = 140015547756. Its totient is φ = 26669628128.

The previous prime is 66674070319. The next prime is 66674070341. The reversal of 66674070340 is 4307047666.

It can be written as a sum of positive squares in 2 ways, for example, as 10815584004 + 55858486336 = 103998^2 + 236344^2 .

It is not an unprimeable number, because it can be changed into a prime (66674070341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666851739 + ... + 1666851778.

It is an arithmetic number, because the mean of its divisors is an integer number (11667962313).

Almost surely, 2^66674070340 is an apocalyptic number.

It is an amenable number.

66674070340 is an abundant number, since it is smaller than the sum of its proper divisors (73341477416).

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

66674070340 is a wasteful number, since it uses less digits than its factorization.

66674070340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333703526 (or 3333703524 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66674070340 in words is "sixty-six billion, six hundred seventy-four million, seventy thousand, three hundred forty".