66487466 has 4 divisors (see below), whose sum is σ = 99731202. Its totient is φ = 33243732.

The previous prime is 66487439. The next prime is 66487489. The reversal of 66487466 is 66478466.

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., 65529025 + 958441 = 8095^2 + 979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66487466.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621865 + ... + 16621868.

Almost surely, 2^66487466 is an apocalyptic number.

66487466 is a deficient number, since it is larger than the sum of its proper divisors (33243736).

66487466 is a wasteful number, since it uses less digits than its factorization.

66487466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33243735.

The product of its digits is 1161216, while the sum is 47.

The square root of 66487466 is about 8153.9846700862. The cubic root of 66487466 is about 405.1164954721.

The spelling of 66487466 in words is "sixty-six million, four hundred eighty-seven thousand, four hundred sixty-six".