620422668244 has 6 divisors (see below), whose sum is σ = 1085739669434. Its totient is φ = 310211334120.

The previous prime is 620422668233. The next prime is 620422668259. The reversal of 620422668244 is 442866224026.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 588270592144 + 32152076100 = 766988^2 + 179310^2 .

It is a junction number, because it is equal to n+sod(n) for n = 620422668194 and 620422668203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77552833527 + ... + 77552833534.

Almost surely, 2^620422668244 is an apocalyptic number.

It is an amenable number.

620422668244 is a deficient number, since it is larger than the sum of its proper divisors (465317001190).

620422668244 is a wasteful number, since it uses less digits than its factorization.

620422668244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155105667065 (or 155105667063 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 46.

The spelling of 620422668244 in words is "six hundred twenty billion, four hundred twenty-two million, six hundred sixty-eight thousand, two hundred forty-four".