620444493 has 12 divisors (see below), whose sum is σ = 902214300. Its totient is φ = 410852736.

The previous prime is 620444491. The next prime is 620444519. The reversal of 620444493 is 394444026.

620444493 is a `hidden beast` number, since 6 + 204 + 4 + 449 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 278823204 + 341621289 = 16698^2 + 18483^2 .

It is not a de Polignac number, because 620444493 - 2¹ = 620444491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620444491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229996 + ... + 232677.

It is an arithmetic number, because the mean of its divisors is an integer number (75184525).

Almost surely, 2^620444493 is an apocalyptic number.

It is an amenable number.

620444493 is a deficient number, since it is larger than the sum of its proper divisors (281769807).

620444493 is a wasteful number, since it uses less digits than its factorization.

620444493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462828 (or 462825 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 620444493 is about 24908.7232310289. The cubic root of 620444493 is about 852.9056238576.

The spelling of 620444493 in words is "six hundred twenty million, four hundred forty-four thousand, four hundred ninety-three".