620849706 has 16 divisors (see below), whose sum is σ = 1243207200. Its totient is φ = 206698608.

The previous prime is 620849687. The next prime is 620849717. The reversal of 620849706 is 607948026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57436 + ... + 67383.

It is an arithmetic number, because the mean of its divisors is an integer number (77700450).

Almost surely, 2^620849706 is an apocalyptic number.

620849706 is an abundant number, since it is smaller than the sum of its proper divisors (622357494).

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

620849706 is a wasteful number, since it uses less digits than its factorization.

620849706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125653.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 620849706 is about 24916.8558610431. The cubic root of 620849706 is about 853.0912613259.

The spelling of 620849706 in words is "six hundred twenty million, eight hundred forty-nine thousand, seven hundred six".