616505607 has 8 divisors (see below), whose sum is σ = 913341680. Its totient is φ = 411003720.

The previous prime is 616505579. The next prime is 616505621. The reversal of 616505607 is 706505616.

It is a happy number.

It is not a de Polignac number, because 616505607 - 2¹⁹ = 615981319 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 (616505677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11416744 + ... + 11416797.

It is an arithmetic number, because the mean of its divisors is an integer number (114167710).

Almost surely, 2^616505607 is an apocalyptic number.

616505607 is a deficient number, since it is larger than the sum of its proper divisors (296836073).

616505607 is a wasteful number, since it uses less digits than its factorization.

616505607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22833550 (or 22833544 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 616505607 is about 24829.5309460328. The cubic root of 616505607 is about 851.0969031277.

Subtracting 616505607 from its reverse (706505616), we obtain a palindrome (90000009).

The spelling of 616505607 in words is "six hundred sixteen million, five hundred five thousand, six hundred seven".