618621324 has 12 divisors (see below), whose sum is σ = 1443449784. Its totient is φ = 206207104.

The previous prime is 618621319. The next prime is 618621343. The reversal of 618621324 is 423126816.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25775877 + ... + 25775900.

It is an arithmetic number, because the mean of its divisors is an integer number (120287482).

Almost surely, 2^618621324 is an apocalyptic number.

It is an amenable number.

618621324 is an abundant number, since it is smaller than the sum of its proper divisors (824828460).

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

618621324 is a wasteful number, since it uses less digits than its factorization.

618621324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51551784 (or 51551782 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 618621324 is about 24872.0993082611. The cubic root of 618621324 is about 852.0693864450.

The spelling of 618621324 in words is "six hundred eighteen million, six hundred twenty-one thousand, three hundred twenty-four".