620656442 has 32 divisors (see below), whose sum is σ = 1112227200. Its totient is φ = 259496160.

The previous prime is 620656427. The next prime is 620656457. The reversal of 620656442 is 244656026.

It is an interprime number because it is at equal distance from previous prime (620656427) and next prime (620656457).

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 15 ways as a sum of consecutive naturals, for example, 17093 + ... + 39159.

It is an arithmetic number, because the mean of its divisors is an integer number (34757100).

Almost surely, 2^620656442 is an apocalyptic number.

620656442 is a deficient number, since it is larger than the sum of its proper divisors (491570758).

620656442 is a wasteful number, since it uses less digits than its factorization.

620656442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22131 (or 22117 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 620656442 is about 24912.9773812766. The cubic root of 620656442 is about 853.0027326860.

The spelling of 620656442 in words is "six hundred twenty million, six hundred fifty-six thousand, four hundred forty-two".