620457212 has 12 divisors (see below), whose sum is σ = 1095762360. Its totient is φ = 307382256.

The previous prime is 620457209. The next prime is 620457251. The reversal of 620457212 is 212754026.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711098 + ... + 711969.

It is an arithmetic number, because the mean of its divisors is an integer number (91313530).

Almost surely, 2^620457212 is an apocalyptic number.

It is an amenable number.

620457212 is a deficient number, since it is larger than the sum of its proper divisors (475305148).

620457212 is a wasteful number, since it uses less digits than its factorization.

620457212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423180 (or 1423178 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 620457212 is about 24908.9785418832. The cubic root of 620457212 is about 852.9114519548.

The spelling of 620457212 in words is "six hundred twenty million, four hundred fifty-seven thousand, two hundred twelve".