667583743 has 2 divisors, whose sum is σ = 667583744. Its totient is φ = 667583742.

The previous prime is 667583713. The next prime is 667583747. The reversal of 667583743 is 347385766.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667583743 - 2¹³ = 667575551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667583747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333791871 + 333791872.

It is an arithmetic number, because the mean of its divisors is an integer number (333791872).

Almost surely, 2^667583743 is an apocalyptic number.

667583743 is a deficient number, since it is larger than the sum of its proper divisors (1).

667583743 is an equidigital number, since it uses as much as digits as its factorization.

667583743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The square root of 667583743 is about 25837.6419783230. The cubic root of 667583743 is about 873.9808511847.

The spelling of 667583743 in words is "six hundred sixty-seven million, five hundred eighty-three thousand, seven hundred forty-three".