667743340742 has 8 divisors (see below), whose sum is σ = 1002330966000. Its totient is φ = 333633018744.

The previous prime is 667743340741. The next prime is 667743340769. The reversal of 667743340742 is 247043347766.

667743340742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×667743340742² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667743340741) 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, 119322317 + ... + 119327912.

It is an arithmetic number, because the mean of its divisors is an integer number (125291370750).

Almost surely, 2^667743340742 is an apocalyptic number.

667743340742 is a deficient number, since it is larger than the sum of its proper divisors (334587625258).

667743340742 is a wasteful number, since it uses less digits than its factorization.

667743340742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238651630.

The product of its (nonzero) digits is 14224896, while the sum is 53.

The spelling of 667743340742 in words is "six hundred sixty-seven billion, seven hundred forty-three million, three hundred forty thousand, seven hundred forty-two".