616935987 has 16 divisors (see below), whose sum is σ = 916930560. Its totient is φ = 409962600.

The previous prime is 616935973. The next prime is 616936003. The reversal of 616935987 is 789539616.

It is not a de Polignac number, because 616935987 - 2⁷ = 616935859 is a prime.

It is a super-2 number, since 2×616935987² = 761220024111328338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (616933987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28339 + ... + 45132.

It is an arithmetic number, because the mean of its divisors is an integer number (57308160).

Almost surely, 2^616935987 is an apocalyptic number.

616935987 is a deficient number, since it is larger than the sum of its proper divisors (299994573).

616935987 is a wasteful number, since it uses less digits than its factorization.

616935987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73791 (or 73785 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 616935987 is about 24838.1961301541. The cubic root of 616935987 is about 851.2949061291.

The spelling of 616935987 in words is "six hundred sixteen million, nine hundred thirty-five thousand, nine hundred eighty-seven".