616626686 has 16 divisors (see below), whose sum is σ = 1054683504. Its totient is φ = 267855744.

The previous prime is 616626683. The next prime is 616626709. The reversal of 616626686 is 686626616.

It is a self number, because there is not a number n which added to its sum of digits gives 616626686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616626683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697100 + ... + 697983.

It is an arithmetic number, because the mean of its divisors is an integer number (65917719).

Almost surely, 2^616626686 is an apocalyptic number.

616626686 is a deficient number, since it is larger than the sum of its proper divisors (438056818).

616626686 is a wasteful number, since it uses less digits than its factorization.

616626686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395115.

The product of its digits is 746496, while the sum is 47.

The square root of 616626686 is about 24831.9690318750. The cubic root of 616626686 is about 851.1526167148.

The spelling of 616626686 in words is "six hundred sixteen million, six hundred twenty-six thousand, six hundred eighty-six".