628579768 has 8 divisors (see below), whose sum is σ = 1178587080. Its totient is φ = 314289880.

The previous prime is 628579751. The next prime is 628579771. The reversal of 628579768 is 867975826.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×628579768² = 790225049477867648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39286228 + ... + 39286243.

It is an arithmetic number, because the mean of its divisors is an integer number (147323385).

Almost surely, 2^628579768 is an apocalyptic number.

It is an amenable number.

628579768 is a deficient number, since it is larger than the sum of its proper divisors (550007312).

628579768 is a wasteful number, since it uses less digits than its factorization.

628579768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78572477 (or 78572473 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The square root of 628579768 is about 25071.4931346340. The cubic root of 628579768 is about 856.6172179633.

The spelling of 628579768 in words is "six hundred twenty-eight million, five hundred seventy-nine thousand, seven hundred sixty-eight".