613901 has 4 divisors (see below), whose sum is σ = 635100. Its totient is φ = 592704.

The previous prime is 613889. The next prime is 613903. The reversal of 613901 is 109316.

613901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 491401 + 122500 = 701^2 + 350^2 .

It is a cyclic number.

It is not a de Polignac number, because 613901 - 2¹⁰ = 612877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613903) 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, 10556 + ... + 10613.

It is an arithmetic number, because the mean of its divisors is an integer number (158775).

2⁶¹³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

613901 is a deficient number, since it is larger than the sum of its proper divisors (21199).

613901 is a wasteful number, since it uses less digits than its factorization.

613901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21198.

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

The square root of 613901 is about 783.5183469454. The cubic root of 613901 is about 84.9896642565.

The spelling of 613901 in words is "six hundred thirteen thousand, nine hundred one".