630776057 has 4 divisors (see below), whose sum is σ = 636358260. Its totient is φ = 625193856.

The previous prime is 630776039. The next prime is 630776059. The reversal of 630776057 is 750677036.

630776057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54007801 + 576768256 = 7349^2 + 24016^2 .

It is a cyclic number.

It is not a de Polignac number, because 630776057 - 2⁶ = 630775993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630776059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790932 + ... + 2791157.

It is an arithmetic number, because the mean of its divisors is an integer number (159089565).

Almost surely, 2^630776057 is an apocalyptic number.

It is an amenable number.

630776057 is a deficient number, since it is larger than the sum of its proper divisors (5582203).

630776057 is a wasteful number, since it uses less digits than its factorization.

630776057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582202.

The product of its (nonzero) digits is 185220, while the sum is 41.

The square root of 630776057 is about 25115.2554635624. The cubic root of 630776057 is about 857.6137459574.

The spelling of 630776057 in words is "six hundred thirty million, seven hundred seventy-six thousand, fifty-seven".