667710743 has 8 divisors (see below), whose sum is σ = 765406080. Its totient is φ = 570592440.

The previous prime is 667710733. The next prime is 667710793. The reversal of 667710743 is 347017766.

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 667710743 - 2¹⁸ = 667448599 is a prime.

It is a super-2 number, since 2×667710743² = 891675272635224098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667710743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667710733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141773 + ... + 146406.

It is an arithmetic number, because the mean of its divisors is an integer number (95675760).

Almost surely, 2^667710743 is an apocalyptic number.

667710743 is a deficient number, since it is larger than the sum of its proper divisors (97695337).

667710743 is a wasteful number, since it uses less digits than its factorization.

667710743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288517.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 667710743 is about 25840.0995160622. The cubic root of 667710743 is about 874.0362692160.

The spelling of 667710743 in words is "six hundred sixty-seven million, seven hundred ten thousand, seven hundred forty-three".