616040 has 16 divisors (see below), whose sum is σ = 1386180. Its totient is φ = 246400.

The previous prime is 616027. The next prime is 616051. The reversal of 616040 is 40616.

It can be written as a sum of positive squares in 2 ways, for example, as 568516 + 47524 = 754^2 + 218^2 .

It is a congruent number.

It is an unprimeable number.

616040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7661 + ... + 7740.

2⁶¹⁶⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

616040 is an abundant number, since it is smaller than the sum of its proper divisors (770140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616040 is a wasteful number, since it uses less digits than its factorization.

616040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15412 (or 15408 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 616040 is about 784.8821567599. The cubic root of 616040 is about 85.0882589598.

Adding to 616040 its reverse (40616), we get a palindrome (656656).

The spelling of 616040 in words is "six hundred sixteen thousand, forty".