620618843 has 4 divisors (see below), whose sum is σ = 668358768. Its totient is φ = 572878920.

The previous prime is 620618833. The next prime is 620618861. The reversal of 620618843 is 348816026.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 620618843 - 2⁴ = 620618827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620618797 and 620618806.

It is not an unprimeable number, because it can be changed into a prime (620618833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23869943 + ... + 23869968.

It is an arithmetic number, because the mean of its divisors is an integer number (167089692).

Almost surely, 2^620618843 is an apocalyptic number.

620618843 is a deficient number, since it is larger than the sum of its proper divisors (47739925).

620618843 is a wasteful number, since it uses less digits than its factorization.

620618843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47739924.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 620618843 is about 24912.2227631338. Note that the first 3 decimals coincide. The cubic root of 620618843 is about 852.9855075379.

The spelling of 620618843 in words is "six hundred twenty million, six hundred eighteen thousand, eight hundred forty-three".