666704070740 has 24 divisors (see below), whose sum is σ = 1400094001152. Its totient is φ = 266678684960.

The previous prime is 666704070581. The next prime is 666704070787. The reversal of 666704070740 is 47070407666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3126197 + ... + 3332643.

It is an arithmetic number, because the mean of its divisors is an integer number (58337250048).

Almost surely, 2^666704070740 is an apocalyptic number.

It is an amenable number.

666704070740 is an abundant number, since it is smaller than the sum of its proper divisors (733389930412).

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

666704070740 is a wasteful number, since it uses less digits than its factorization.

666704070740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367927 (or 367925 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 47.

The spelling of 666704070740 in words is "six hundred sixty-six billion, seven hundred four million, seventy thousand, seven hundred forty".