620216266 has 16 divisors (see below), whose sum is σ = 953716680. Its totient is φ = 302321920.

The previous prime is 620216227. The next prime is 620216279. The reversal of 620216266 is 662612026.

It can be written as a sum of positive squares in 4 ways, for example, as 291555625 + 328660641 = 17075^2 + 18129^2 .

It is a super-2 number, since 2×620216266² = 769336433221965512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191670 + ... + 194878.

Almost surely, 2^620216266 is an apocalyptic number.

620216266 is a deficient number, since it is larger than the sum of its proper divisors (333500414).

620216266 is a wasteful number, since it uses less digits than its factorization.

620216266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 620216266 is about 24904.1415431249. The cubic root of 620216266 is about 852.8010321944.

The spelling of 620216266 in words is "six hundred twenty million, two hundred sixteen thousand, two hundred sixty-six".