618197 has 4 divisors (see below), whose sum is σ = 626976. Its totient is φ = 609420.

The previous prime is 618173. The next prime is 618199. The reversal of 618197 is 791816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 618197 - 2¹² = 614101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618199) 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, 4283 + ... + 4424.

It is an arithmetic number, because the mean of its divisors is an integer number (156744).

2⁶¹⁸¹⁹⁷ is an apocalyptic number.

It is an amenable number.

618197 is a deficient number, since it is larger than the sum of its proper divisors (8779).

618197 is an equidigital number, since it uses as much as digits as its factorization.

618197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8778.

The product of its digits is 3024, while the sum is 32.

The square root of 618197 is about 786.2550476786. The cubic root of 618197 is about 85.1874525080.

The spelling of 618197 in words is "six hundred eighteen thousand, one hundred ninety-seven".