616629663 has 24 divisors (see below), whose sum is σ = 974937600. Its totient is φ = 373239360.

The previous prime is 616629641. The next prime is 616629683. The reversal of 616629663 is 366926616.

616629663 is a `hidden beast` number, since 6 + 16 + 629 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 616629663 - 2¹³ = 616621471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616629623) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 36063 + ... + 50336.

It is an arithmetic number, because the mean of its divisors is an integer number (40622400).

Almost surely, 2^616629663 is an apocalyptic number.

616629663 is a deficient number, since it is larger than the sum of its proper divisors (358307937).

616629663 is a wasteful number, since it uses less digits than its factorization.

616629663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86479 (or 86476 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 616629663 is about 24832.0289746931. The cubic root of 616629663 is about 851.1539864669.

The spelling of 616629663 in words is "six hundred sixteen million, six hundred twenty-nine thousand, six hundred sixty-three".