413426666 has 4 divisors (see below), whose sum is σ = 620140002. Its totient is φ = 206713332.

The previous prime is 413426623. The next prime is 413426693. The reversal of 413426666 is 666624314.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666624314 = 2 ⋅333312157.

It can be written as a sum of positive squares in only one way, i.e., 371371441 + 42055225 = 19271^2 + 6485^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103356665 + ... + 103356668.

Almost surely, 2^413426666 is an apocalyptic number.

413426666 is a deficient number, since it is larger than the sum of its proper divisors (206713336).

413426666 is a wasteful number, since it uses less digits than its factorization.

413426666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206713335.

The product of its digits is 124416, while the sum is 38.

The square root of 413426666 is about 20332.8961537701. The cubic root of 413426666 is about 744.9597840250.

The spelling of 413426666 in words is "four hundred thirteen million, four hundred twenty-six thousand, six hundred sixty-six".