618622 has 4 divisors (see below), whose sum is σ = 927936. Its totient is φ = 309310.

The previous prime is 618619. The next prime is 618637. The reversal of 618622 is 226816.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 154654 + ... + 154657.

It is an arithmetic number, because the mean of its divisors is an integer number (231984).

2⁶¹⁸⁶²² is an apocalyptic number.

618622 is a deficient number, since it is larger than the sum of its proper divisors (309314).

618622 is a wasteful number, since it uses less digits than its factorization.

618622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309313.

The product of its digits is 1152, while the sum is 25.

The square root of 618622 is about 786.5252697784. The cubic root of 618622 is about 85.2069696812.

The spelling of 618622 in words is "six hundred eighteen thousand, six hundred twenty-two".