616245121 has 8 divisors (see below), whose sum is σ = 652739040. Its totient is φ = 579778368.

The previous prime is 616245103. The next prime is 616245131. The reversal of 616245121 is 121542616.

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 616245121 - 2¹⁵ = 616212353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616245121.

It is not an unprimeable number, because it can be changed into a prime (616245131) 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, 57250 + ... + 67156.

It is an arithmetic number, because the mean of its divisors is an integer number (81592380).

Almost surely, 2^616245121 is an apocalyptic number.

It is an amenable number.

616245121 is a deficient number, since it is larger than the sum of its proper divisors (36493919).

616245121 is a wasteful number, since it uses less digits than its factorization.

616245121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13583.

The product of its digits is 2880, while the sum is 28.

The square root of 616245121 is about 24824.2849041015. The cubic root of 616245121 is about 850.9770177301.

Adding to 616245121 its reverse (121542616), we get a palindrome (737787737).

The spelling of 616245121 in words is "six hundred sixteen million, two hundred forty-five thousand, one hundred twenty-one".