66467475 has 18 divisors (see below), whose sum is σ = 119051036. Its totient is φ = 35449200.

The previous prime is 66467461. The next prime is 66467483. The reversal of 66467475 is 57476466.

It is a happy number.

It is not a de Polignac number, because 66467475 - 2⁶ = 66467411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66467475.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 147481 + ... + 147930.

Almost surely, 2^66467475 is an apocalyptic number.

66467475 is a deficient number, since it is larger than the sum of its proper divisors (52583561).

66467475 is a wasteful number, since it uses less digits than its factorization.

66467475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295427 (or 295419 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 66467475 is about 8152.7587355447. The cubic root of 66467475 is about 405.0758888426.

The spelling of 66467475 in words is "sixty-six million, four hundred sixty-seven thousand, four hundred seventy-five".