667227553 has 2 divisors, whose sum is σ = 667227554. Its totient is φ = 667227552.

The previous prime is 667227479. The next prime is 667227559. The reversal of 667227553 is 355722766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458944929 + 208282624 = 21423^2 + 14432^2 .

It is a cyclic number.

It is not a de Polignac number, because 667227553 - 2¹³ = 667219361 is a prime.

It is not a weakly prime, because it can be changed into another prime (667227559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333613776 + 333613777.

It is an arithmetic number, because the mean of its divisors is an integer number (333613777).

Almost surely, 2^667227553 is an apocalyptic number.

It is an amenable number.

667227553 is a deficient number, since it is larger than the sum of its proper divisors (1).

667227553 is an equidigital number, since it uses as much as digits as its factorization.

667227553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 43.

The square root of 667227553 is about 25830.7482082885. The cubic root of 667227553 is about 873.8253857346.

It can be divided in two parts, 6672 and 27553, that added together give a square (34225 = 185²).

The spelling of 667227553 in words is "six hundred sixty-seven million, two hundred twenty-seven thousand, five hundred fifty-three".