66453479 has 2 divisors, whose sum is σ = 66453480. Its totient is φ = 66453478.

The previous prime is 66453473. The next prime is 66453521. The reversal of 66453479 is 97435466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66453479 - 2⁸ = 66453223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66453473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33226739 + 33226740.

It is an arithmetic number, because the mean of its divisors is an integer number (33226740).

Almost surely, 2^66453479 is an apocalyptic number.

66453479 is a deficient number, since it is larger than the sum of its proper divisors (1).

66453479 is an equidigital number, since it uses as much as digits as its factorization.

66453479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 44.

The square root of 66453479 is about 8151.9003305978. The cubic root of 66453479 is about 405.0474546843.

The spelling of 66453479 in words is "sixty-six million, four hundred fifty-three thousand, four hundred seventy-nine".