667879453 has 2 divisors, whose sum is σ = 667879454. Its totient is φ = 667879452.

The previous prime is 667879439. The next prime is 667879477. The reversal of 667879453 is 354978766.

It is a happy number.

667879453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509043844 + 158835609 = 22562^2 + 12603^2 .

It is a cyclic number.

It is not a de Polignac number, because 667879453 - 2²¹ = 665782301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667879394 and 667879403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667879403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333939726 + 333939727.

It is an arithmetic number, because the mean of its divisors is an integer number (333939727).

Almost surely, 2^667879453 is an apocalyptic number.

It is an amenable number.

667879453 is a deficient number, since it is larger than the sum of its proper divisors (1).

667879453 is an equidigital number, since it uses as much as digits as its factorization.

667879453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The square root of 667879453 is about 25843.3638096901. The cubic root of 667879453 is about 874.1098770583.

The spelling of 667879453 in words is "six hundred sixty-seven million, eight hundred seventy-nine thousand, four hundred fifty-three".