66053489 has 2 divisors, whose sum is σ = 66053490. Its totient is φ = 66053488.

The previous prime is 66053479. The next prime is 66053513. The reversal of 66053489 is 98435066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64000000 + 2053489 = 8000^2 + 1433^2 .

It is a cyclic number.

It is not a de Polignac number, because 66053489 - 2⁸ = 66053233 is a prime.

It is not a weakly prime, because it can be changed into another prime (66053479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33026744 + 33026745.

It is an arithmetic number, because the mean of its divisors is an integer number (33026745).

Almost surely, 2^66053489 is an apocalyptic number.

It is an amenable number.

66053489 is a deficient number, since it is larger than the sum of its proper divisors (1).

66053489 is an equidigital number, since it uses as much as digits as its factorization.

66053489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 66053489 is about 8127.3297582908. The cubic root of 66053489 is about 404.2331452533.

The spelling of 66053489 in words is "sixty-six million, fifty-three thousand, four hundred eighty-nine".