620091222 has 16 divisors (see below), whose sum is σ = 1240505280. Its totient is φ = 206643272.

The previous prime is 620091211. The next prime is 620091223. The reversal of 620091222 is 222190026.

It is a junction number, because it is equal to n+sod(n) for n = 620091192 and 620091201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620091223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16729 + ... + 38987.

It is an arithmetic number, because the mean of its divisors is an integer number (77531580).

Almost surely, 2^620091222 is an apocalyptic number.

620091222 is an abundant number, since it is smaller than the sum of its proper divisors (620414058).

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

620091222 is a wasteful number, since it uses less digits than its factorization.

620091222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26907.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 620091222 is about 24901.6309104444. The cubic root of 620091222 is about 852.7437162626.

The spelling of 620091222 in words is "six hundred twenty million, ninety-one thousand, two hundred twenty-two".