620740756 has 12 divisors (see below), whose sum is σ = 1086553440. Its totient is φ = 310296920.

The previous prime is 620740723. The next prime is 620740763. The reversal of 620740756 is 657047026.

620740756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555 + ... + 35413.

It is an arithmetic number, because the mean of its divisors is an integer number (90546120).

Almost surely, 2^620740756 is an apocalyptic number.

It is an amenable number.

620740756 is a deficient number, since it is larger than the sum of its proper divisors (465812684).

620740756 is a wasteful number, since it uses less digits than its factorization.

620740756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36734 (or 36732 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 620740756 is about 24914.6694940952. The cubic root of 620740756 is about 853.0413567466.

The spelling of 620740756 in words is "six hundred twenty million, seven hundred forty thousand, seven hundred fifty-six".