667370401 has 2 divisors, whose sum is σ = 667370402. Its totient is φ = 667370400.

The previous prime is 667370357. The next prime is 667370413. The reversal of 667370401 is 104073766.

667370401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646430625 + 20939776 = 25425^2 + 4576^2 .

It is a cyclic number.

It is not a de Polignac number, because 667370401 - 2¹¹ = 667368353 is a prime.

It is not a weakly prime, because it can be changed into another prime (667370441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333685200 + 333685201.

It is an arithmetic number, because the mean of its divisors is an integer number (333685201).

Almost surely, 2^667370401 is an apocalyptic number.

It is an amenable number.

667370401 is a deficient number, since it is larger than the sum of its proper divisors (1).

667370401 is an equidigital number, since it uses as much as digits as its factorization.

667370401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 667370401 is about 25833.5131370087. The cubic root of 667370401 is about 873.8877409242.

The spelling of 667370401 in words is "six hundred sixty-seven million, three hundred seventy thousand, four hundred one".