620220312 has 24 divisors (see below), whose sum is σ = 1679763540. Its totient is φ = 206740080.

The previous prime is 620220259. The next prime is 620220329. The reversal of 620220312 is 213022026.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4307014 + ... + 4307157.

Almost surely, 2^620220312 is an apocalyptic number.

It is an amenable number.

620220312 is an abundant number, since it is smaller than the sum of its proper divisors (1059543228).

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

620220312 is a wasteful number, since it uses less digits than its factorization.

620220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8614183 (or 8614176 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 620220312 is about 24904.2227744614. Note that the first 3 decimals coincide. The cubic root of 620220312 is about 852.8028866150.

Adding to 620220312 its reverse (213022026), we get a palindrome (833242338).

The spelling of 620220312 in words is "six hundred twenty million, two hundred twenty thousand, three hundred twelve".