616255623 has 6 divisors (see below), whose sum is σ = 890147024. Its totient is φ = 410837076.

The previous prime is 616255553. The next prime is 616255663. The reversal of 616255623 is 326552616.

It is a happy number.

616255623 is a `hidden beast` number, since 6 + 1 + 6 + 25 + 5 + 623 = 666.

It is not a de Polignac number, because 616255623 - 2⁹ = 616255111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616255663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34236415 + ... + 34236432.

Almost surely, 2^616255623 is an apocalyptic number.

616255623 is a deficient number, since it is larger than the sum of its proper divisors (273891401).

616255623 is a wasteful number, since it uses less digits than its factorization.

616255623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68472853 (or 68472850 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 616255623 is about 24824.4964299379. The cubic root of 616255623 is about 850.9818517967.

The spelling of 616255623 in words is "six hundred sixteen million, two hundred fifty-five thousand, six hundred twenty-three".