616455 has 48 divisors (see below), whose sum is σ = 1297920. Its totient is φ = 264384.

The previous prime is 616439. The next prime is 616459. The reversal of 616455 is 554616.

It is a happy number.

616455 is a `hidden beast` number, since 616 + 45 + 5 = 666.

It is not a de Polignac number, because 616455 - 2⁴ = 616439 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 616455.

It is not an unprimeable number, because it can be changed into a prime (616459) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5934 + ... + 6036.

It is an arithmetic number, because the mean of its divisors is an integer number (27040).

2⁶¹⁶⁴⁵⁵ is an apocalyptic number.

616455 is an abundant number, since it is smaller than the sum of its proper divisors (681465).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616455 is a wasteful number, since it uses less digits than its factorization.

616455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 137 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 616455 is about 785.1464831482. The cubic root of 616455 is about 85.1073614537.

It can be divided in two parts, 6 and 16455, that added together give a palindrome (16461).

The spelling of 616455 in words is "six hundred sixteen thousand, four hundred fifty-five".