616745141 has 4 divisors (see below), whose sum is σ = 620673612. Its totient is φ = 612816672.

The previous prime is 616745137. The next prime is 616745183. The reversal of 616745141 is 141547616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62331025 + 554414116 = 7895^2 + 23546^2 .

It is a cyclic number.

It is not a de Polignac number, because 616745141 - 2² = 616745137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616745131) 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, 1964000 + ... + 1964313.

It is an arithmetic number, because the mean of its divisors is an integer number (155168403).

Almost surely, 2^616745141 is an apocalyptic number.

It is an amenable number.

616745141 is a deficient number, since it is larger than the sum of its proper divisors (3928471).

616745141 is a wasteful number, since it uses less digits than its factorization.

616745141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928470.

The product of its digits is 20160, while the sum is 35.

The square root of 616745141 is about 24834.3540483742. The cubic root of 616745141 is about 851.2071158307.

The spelling of 616745141 in words is "six hundred sixteen million, seven hundred forty-five thousand, one hundred forty-one".