628771677 has 16 divisors (see below), whose sum is σ = 876883968. Its totient is φ = 400006640.

The previous prime is 628771657. The next prime is 628771681. The reversal of 628771677 is 776177826.

It is a cyclic number.

It is not a de Polignac number, because 628771677 - 2²³ = 620383069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628771657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19168 + ... + 40310.

It is an arithmetic number, because the mean of its divisors is an integer number (54805248).

Almost surely, 2^628771677 is an apocalyptic number.

It is an amenable number.

628771677 is a deficient number, since it is larger than the sum of its proper divisors (248112291).

628771677 is a wasteful number, since it uses less digits than its factorization.

628771677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21600.

The product of its digits is 1382976, while the sum is 51.

The square root of 628771677 is about 25075.3200777179. The cubic root of 628771677 is about 856.7043858057.

The spelling of 628771677 in words is "six hundred twenty-eight million, seven hundred seventy-one thousand, six hundred seventy-seven".