610139 has 4 divisors (see below), whose sum is σ = 611856. Its totient is φ = 608424.

The previous prime is 610123. The next prime is 610157. The reversal of 610139 is 931016.

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

It is a cyclic number.

It is not a de Polignac number, because 610139 - 2⁴ = 610123 is a prime.

It is an Ulam number.

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 610139.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 610139.

It is not an unprimeable number, because it can be changed into a prime (610199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (152964).

2⁶¹⁰¹³⁹ is an apocalyptic number.

610139 is a deficient number, since it is larger than the sum of its proper divisors (1717).

610139 is a wasteful number, since it uses less digits than its factorization.

610139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 610139 is about 781.1139481535. The cubic root of 610139 is about 84.8157021920.

The spelling of 610139 in words is "six hundred ten thousand, one hundred thirty-nine".