620665268 has 24 divisors (see below), whose sum is σ = 1135085952. Its totient is φ = 296662464.

The previous prime is 620665249. The next prime is 620665273. The reversal of 620665268 is 862566026.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30305 + ... + 46472.

It is an arithmetic number, because the mean of its divisors is an integer number (47295248).

Almost surely, 2^620665268 is an apocalyptic number.

It is an amenable number.

620665268 is a deficient number, since it is larger than the sum of its proper divisors (514420684).

620665268 is a wasteful number, since it uses less digits than its factorization.

620665268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76871 (or 76869 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 620665268 is about 24913.1545172425. The cubic root of 620665268 is about 853.0067760214.

The spelling of 620665268 in words is "six hundred twenty million, six hundred sixty-five thousand, two hundred sixty-eight".