612666216 has 48 divisors (see below), whose sum is σ = 1660464000. Its totient is φ = 204079392.

The previous prime is 612666199. The next prime is 612666221.

It is a happy number.

612666216 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170955 + ... + 174501.

It is an arithmetic number, because the mean of its divisors is an integer number (34593000).

Almost surely, 2^612666216 is an apocalyptic number.

It is an amenable number.

612666216 is an abundant number, since it is smaller than the sum of its proper divisors (1047797784).

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

612666216 is a wasteful number, since it uses less digits than its factorization.

612666216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958 (or 5951 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 612666216 is about 24752.0951840445. The cubic root of 612666216 is about 849.3264403298.

The spelling of 612666216 in words is "six hundred twelve million, six hundred sixty-six thousand, two hundred sixteen".