1246604066 has 4 divisors (see below), whose sum is σ = 1869906102. Its totient is φ = 623302032.

The previous prime is 1246604053. The next prime is 1246604069. The reversal of 1246604066 is 6604066421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6604066421 = 127 ⋅52000523.

It can be written as a sum of positive squares in only one way, i.e., 1054365841 + 192238225 = 32471^2 + 13865^2 .

It is not an unprimeable number, because it can be changed into a prime (1246604069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311651015 + ... + 311651018.

Almost surely, 2^1246604066 is an apocalyptic number.

1246604066 is a deficient number, since it is larger than the sum of its proper divisors (623302036).

1246604066 is an equidigital number, since it uses as much as digits as its factorization.

1246604066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623302035.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1246604066 is about 35307.2806372850. The cubic root of 1246604066 is about 1076.2409512077.

The spelling of 1246604066 in words is "one billion, two hundred forty-six million, six hundred four thousand, sixty-six".