616790649 has 8 divisors (see below), whose sum is σ = 826562880. Its totient is φ = 409106096.

The previous prime is 616790621. The next prime is 616790653. The reversal of 616790649 is 946097616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 616790649 - 2⁹ = 616790137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 616790598 and 616790607.

It is not an unprimeable number, because it can be changed into a prime (616790689) 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, 521229 + ... + 522410.

It is an arithmetic number, because the mean of its divisors is an integer number (103320360).

Almost surely, 2^616790649 is an apocalyptic number.

It is an amenable number.

616790649 is a deficient number, since it is larger than the sum of its proper divisors (209772231).

616790649 is a wasteful number, since it uses less digits than its factorization.

616790649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043839.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 616790649 is about 24835.2702622701. The cubic root of 616790649 is about 851.2280514264.

The spelling of 616790649 in words is "six hundred sixteen million, seven hundred ninety thousand, six hundred forty-nine".