1216606474 has 8 divisors (see below), whose sum is σ = 1825058340. Its totient is φ = 608253696.

The previous prime is 1216606441. The next prime is 1216606481. The reversal of 1216606474 is 4746066121.

It can be written as a sum of positive squares in 2 ways, for example, as 1194186249 + 22420225 = 34557^2 + 4735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31402 + ... + 58474.

Almost surely, 2^1216606474 is an apocalyptic number.

1216606474 is a deficient number, since it is larger than the sum of its proper divisors (608451866).

1216606474 is a wasteful number, since it uses less digits than its factorization.

1216606474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49544.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1216606474 is about 34879.8863816957. The cubic root of 1216606474 is about 1067.5380769508.

The spelling of 1216606474 in words is "one billion, two hundred sixteen million, six hundred six thousand, four hundred seventy-four".