620650206 has 24 divisors (see below), whose sum is σ = 1466991864. Its totient is φ = 188075760.

The previous prime is 620650189. The next prime is 620650211. The reversal of 620650206 is 602056026.

620650206 is a `hidden beast` number, since 6 + 2 + 0 + 650 + 2 + 0 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 620650206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1567101 + ... + 1567496.

It is an arithmetic number, because the mean of its divisors is an integer number (61124661).

Almost surely, 2^620650206 is an apocalyptic number.

620650206 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

620650206 is an abundant number, since it is smaller than the sum of its proper divisors (846341658).

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

620650206 is a wasteful number, since it uses less digits than its factorization.

620650206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134616 (or 3134613 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 620650206 is about 24912.8522253073. The cubic root of 620650206 is about 852.9998758491. Note that the first 3 decimals are identical.

The spelling of 620650206 in words is "six hundred twenty million, six hundred fifty thousand, two hundred six".