66489376 has 24 divisors (see below), whose sum is σ = 131089644. Its totient is φ = 33196800.

The previous prime is 66489361. The next prime is 66489419. The reversal of 66489376 is 67398466.

It can be written as a sum of positive squares in 2 ways, for example, as 65999376 + 490000 = 8124^2 + 700^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34026 + ... + 35926.

Almost surely, 2^66489376 is an apocalyptic number.

It is an amenable number.

66489376 is a deficient number, since it is larger than the sum of its proper divisors (64600268).

66489376 is a wasteful number, since it uses less digits than its factorization.

66489376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004 (or 2996 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 66489376 is about 8154.1017898969. The cubic root of 66489376 is about 405.1203747250.

The spelling of 66489376 in words is "sixty-six million, four hundred eighty-nine thousand, three hundred seventy-six".