616990037 has 4 divisors (see below), whose sum is σ = 617040300. Its totient is φ = 616939776.

The previous prime is 616990001. The next prime is 616990039. The reversal of 616990037 is 730099616.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 444619396 + 172370641 = 21086^2 + 13129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616990037 is a prime.

It is a super-2 number, since 2×616990037² = 761353411514522738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616989976 and 616990003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616990039) 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 3 ways as a sum of consecutive naturals, for example, 6839 + ... + 35787.

It is an arithmetic number, because the mean of its divisors is an integer number (154260075).

Almost surely, 2^616990037 is an apocalyptic number.

It is an amenable number.

616990037 is a deficient number, since it is larger than the sum of its proper divisors (50263).

616990037 is a wasteful number, since it uses less digits than its factorization.

616990037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50262.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 616990037 is about 24839.2841483002. The cubic root of 616990037 is about 851.3197661616.

The spelling of 616990037 in words is "six hundred sixteen million, nine hundred ninety thousand, thirty-seven".