667406807357 has 2 divisors, whose sum is σ = 667406807358. Its totient is φ = 667406807356.

The previous prime is 667406807321. The next prime is 667406807401. The reversal of 667406807357 is 753708604766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649755293476 + 17651513881 = 806074^2 + 132859^2 .

It is a cyclic number.

It is not a de Polignac number, because 667406807357 - 2⁸ = 667406807101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667406807296 and 667406807305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667406807317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333703403678 + 333703403679.

It is an arithmetic number, because the mean of its divisors is an integer number (333703403679).

Almost surely, 2^667406807357 is an apocalyptic number.

It is an amenable number.

667406807357 is a deficient number, since it is larger than the sum of its proper divisors (1).

667406807357 is an equidigital number, since it uses as much as digits as its factorization.

667406807357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35562240, while the sum is 59.

The spelling of 667406807357 in words is "six hundred sixty-seven billion, four hundred six million, eight hundred seven thousand, three hundred fifty-seven".