618402 has 8 divisors (see below), whose sum is σ = 1236816. Its totient is φ = 206132.

The previous prime is 618377. The next prime is 618407. The reversal of 618402 is 204816.

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

618402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (618407) by changing a digit.

618402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51528 + ... + 51539.

It is an arithmetic number, because the mean of its divisors is an integer number (154602).

2⁶¹⁸⁴⁰² is an apocalyptic number.

618402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

618402 is a wasteful number, since it uses less digits than its factorization.

618402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103072.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 618402 is about 786.3854016956. The cubic root of 618402 is about 85.1968677902.

The spelling of 618402 in words is "six hundred eighteen thousand, four hundred two".