616122978 has 8 divisors (see below), whose sum is σ = 1232245968. Its totient is φ = 205374324.

The previous prime is 616122967. The next prime is 616123021. The reversal of 616122978 is 879221616.

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

616122978 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 51343576 + ... + 51343587.

It is an arithmetic number, because the mean of its divisors is an integer number (154030746).

Almost surely, 2^616122978 is an apocalyptic number.

616122978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

616122978 is a wasteful number, since it uses less digits than its factorization.

616122978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102687168.

The product of its digits is 72576, while the sum is 42.

The square root of 616122978 is about 24821.8246307559. The cubic root of 616122978 is about 850.9207913194.

The spelling of 616122978 in words is "six hundred sixteen million, one hundred twenty-two thousand, nine hundred seventy-eight".