667606705464743 has 8 divisors (see below), whose sum is σ = 734979859228560. Its totient is φ = 601347157548480.

The previous prime is 667606705464733. The next prime is 667606705464757. The reversal of 667606705464743 is 347464507606766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 667606705464743 - 2⁴⁴ = 650014519420327 is a prime.

It is a super-2 number, since 2×667606705464743² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667606705464733) 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, 278401460630 + ... + 278401463027.

It is an arithmetic number, because the mean of its divisors is an integer number (91872482403570).

Almost surely, 2^{667606705464743} is an apocalyptic number.

667606705464743 is a deficient number, since it is larger than the sum of its proper divisors (67373153763817).

667606705464743 is a wasteful number, since it uses less digits than its factorization.

667606705464743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556802923777.

The product of its (nonzero) digits is 2560481280, while the sum is 71.

The spelling of 667606705464743 in words is "six hundred sixty-seven trillion, six hundred six billion, seven hundred five million, four hundred sixty-four thousand, seven hundred forty-three".