1216650604 has 36 divisors (see below), whose sum is σ = 2338081200. Its totient is φ = 553600320.

The previous prime is 1216650587. The next prime is 1216650629. The reversal of 1216650604 is 4060566121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35322 + ... + 60670.

It is an arithmetic number, because the mean of its divisors is an integer number (64946700).

Almost surely, 2^1216650604 is an apocalyptic number.

It is an amenable number.

1216650604 is a deficient number, since it is larger than the sum of its proper divisors (1121430596).

1216650604 is a wasteful number, since it uses less digits than its factorization.

1216650604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25450 (or 25435 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1216650604 is about 34880.5189754969. The cubic root of 1216650604 is about 1067.5509844074.

The spelling of 1216650604 in words is "one billion, two hundred sixteen million, six hundred fifty thousand, six hundred four".