66366475 has 24 divisors (see below), whose sum is σ = 95607968. Its totient is φ = 44755200.

The previous prime is 66366473. The next prime is 66366479. The reversal of 66366475 is 57466366.

It is not a de Polignac number, because 66366475 - 2¹ = 66366473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66366473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7567 + ... + 13783.

Almost surely, 2^66366475 is an apocalyptic number.

66366475 is a deficient number, since it is larger than the sum of its proper divisors (29241493).

66366475 is a wasteful number, since it uses less digits than its factorization.

66366475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295 (or 6290 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 66366475 is about 8146.5621583586. The cubic root of 66366475 is about 404.8706084650.

The spelling of 66366475 in words is "sixty-six million, three hundred sixty-six thousand, four hundred seventy-five".