612651916 has 24 divisors (see below), whose sum is σ = 1150768080. Its totient is φ = 284355072.

The previous prime is 612651913. The next prime is 612651997. The reversal of 612651916 is 619156216.

It is not an unprimeable number, because it can be changed into a prime (612651911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 56746 + ... + 66673.

It is an arithmetic number, because the mean of its divisors is an integer number (47948670).

Almost surely, 2^612651916 is an apocalyptic number.

It is an amenable number.

612651916 is a deficient number, since it is larger than the sum of its proper divisors (538116164).

612651916 is a wasteful number, since it uses less digits than its factorization.

612651916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123513 (or 123511 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 612651916 is about 24751.8063179235. The cubic root of 612651916 is about 849.3198323475.

The spelling of 612651916 in words is "six hundred twelve million, six hundred fifty-one thousand, nine hundred sixteen".