78616626 has 32 divisors (see below), whose sum is σ = 172501056. Its totient is φ = 23688000.

The previous prime is 78616597. The next prime is 78616663. The reversal of 78616626 is 62661687.

It is a happy number.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 8656 + ... + 15236.

It is an arithmetic number, because the mean of its divisors is an integer number (5390658).

Almost surely, 2^78616626 is an apocalyptic number.

78616626 is an abundant number, since it is smaller than the sum of its proper divisors (93884430).

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

78616626 is a wasteful number, since it uses less digits than its factorization.

78616626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778.

The product of its digits is 145152, while the sum is 42.

The square root of 78616626 is about 8866.6017165541. The cubic root of 78616626 is about 428.3888254785.

The spelling of 78616626 in words is "seventy-eight million, six hundred sixteen thousand, six hundred twenty-six".