66499466 has 16 divisors (see below), whose sum is σ = 109016928. Its totient is φ = 30171600.

The previous prime is 66499453. The next prime is 66499481.

It is a happy number.

66499466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11021 + ... + 15951.

It is an arithmetic number, because the mean of its divisors is an integer number (6813558).

Almost surely, 2^66499466 is an apocalyptic number.

66499466 is a deficient number, since it is larger than the sum of its proper divisors (42517462).

66499466 is a wasteful number, since it uses less digits than its factorization.

66499466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557.

The product of its digits is 1679616, while the sum is 50.

The square root of 66499466 is about 8154.7204734436. The cubic root of 66499466 is about 405.1408665092.

The spelling of 66499466 in words is "sixty-six million, four hundred ninety-nine thousand, four hundred sixty-six".