1216662504 has 32 divisors (see below), whose sum is σ = 3050442720. Its totient is φ = 404382656.

The previous prime is 1216662479. The next prime is 1216662509. The reversal of 1216662504 is 4052666121.

It is not an unprimeable number, because it can be changed into a prime (1216662509) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 64719 + ... + 81374.

It is an arithmetic number, because the mean of its divisors is an integer number (95326335).

Almost surely, 2^1216662504 is an apocalyptic number.

It is an amenable number.

1216662504 is an abundant number, since it is smaller than the sum of its proper divisors (1833780216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1216662504 is a wasteful number, since it uses less digits than its factorization.

1216662504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146449 (or 146445 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1216662504 is about 34880.6895574041. The cubic root of 1216662504 is about 1067.5544649507.

The spelling of 1216662504 in words is "one billion, two hundred sixteen million, six hundred sixty-two thousand, five hundred four".