66468026 has 4 divisors (see below), whose sum is σ = 99702042. Its totient is φ = 33234012.

The previous prime is 66468019. The next prime is 66468047. The reversal of 66468026 is 62086466.

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., 65593801 + 874225 = 8099^2 + 935^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16617005 + ... + 16617008.

Almost surely, 2^66468026 is an apocalyptic number.

66468026 is a deficient number, since it is larger than the sum of its proper divisors (33234016).

66468026 is a wasteful number, since it uses less digits than its factorization.

66468026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33234015.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 66468026 is about 8152.7925277171. The cubic root of 66468026 is about 405.0770081680.

The spelling of 66468026 in words is "sixty-six million, four hundred sixty-eight thousand, twenty-six".