618455 has 8 divisors (see below), whose sum is σ = 762432. Its totient is φ = 481248.

The previous prime is 618439. The next prime is 618463. The reversal of 618455 is 554816.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 618455 - 2⁴ = 618439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487 + ... + 1856.

It is an arithmetic number, because the mean of its divisors is an integer number (95304).

2⁶¹⁸⁴⁵⁵ is an apocalyptic number.

618455 is a deficient number, since it is larger than the sum of its proper divisors (143977).

618455 is a wasteful number, since it uses less digits than its factorization.

618455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385.

The product of its digits is 4800, while the sum is 29.

The square root of 618455 is about 786.4190994629. The cubic root of 618455 is about 85.1993016467.

The spelling of 618455 in words is "six hundred eighteen thousand, four hundred fifty-five".