628761395 has 32 divisors (see below), whose sum is σ = 810240000. Its totient is φ = 467026560.

The previous prime is 628761391. The next prime is 628761421. The reversal of 628761395 is 593167826.

628761395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628761395 - 2² = 628761391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628761391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1493285 + ... + 1493705.

It is an arithmetic number, because the mean of its divisors is an integer number (25320000).

Almost surely, 2^628761395 is an apocalyptic number.

628761395 is a deficient number, since it is larger than the sum of its proper divisors (181478605).

628761395 is a wasteful number, since it uses less digits than its factorization.

628761395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its digits is 544320, while the sum is 47.

The square root of 628761395 is about 25075.1150545715. The cubic root of 628761395 is about 856.6997160224.

The spelling of 628761395 in words is "six hundred twenty-eight million, seven hundred sixty-one thousand, three hundred ninety-five".