66253466 has 4 divisors (see below), whose sum is σ = 99380202. Its totient is φ = 33126732.

The previous prime is 66253459. The next prime is 66253477. The reversal of 66253466 is 66435266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 2493241 = 7985^2 + 1579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16563365 + ... + 16563368.

Almost surely, 2^66253466 is an apocalyptic number.

66253466 is a deficient number, since it is larger than the sum of its proper divisors (33126736).

66253466 is a wasteful number, since it uses less digits than its factorization.

66253466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33126735.

The product of its digits is 155520, while the sum is 38.

The square root of 66253466 is about 8139.6232099527. The cubic root of 66253466 is about 404.6406730084.

The spelling of 66253466 in words is "sixty-six million, two hundred fifty-three thousand, four hundred sixty-six".