618901 has 4 divisors (see below), whose sum is σ = 624492. Its totient is φ = 613312.

The previous prime is 618883. The next prime is 618913. The reversal of 618901 is 109816.

618901 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 342225 + 276676 = 585^2 + 526^2 .

It is a cyclic number.

It is not a de Polignac number, because 618901 - 2⁵ = 618869 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618941) 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, 2626 + ... + 2851.

It is an arithmetic number, because the mean of its divisors is an integer number (156123).

2⁶¹⁸⁹⁰¹ is an apocalyptic number.

It is an amenable number.

618901 is a deficient number, since it is larger than the sum of its proper divisors (5591).

618901 is a wasteful number, since it uses less digits than its factorization.

618901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 618901 is about 786.7026121731. The cubic root of 618901 is about 85.2197772716.

The spelling of 618901 in words is "six hundred eighteen thousand, nine hundred one".