628136961 has 8 divisors (see below), whose sum is σ = 886781664. Its totient is φ = 394125120.

The previous prime is 628136959. The next prime is 628137019. The reversal of 628136961 is 169631826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 628136961 - 2¹ = 628136959 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (628136461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6158155 + ... + 6158256.

It is an arithmetic number, because the mean of its divisors is an integer number (110847708).

Almost surely, 2^628136961 is an apocalyptic number.

It is an amenable number.

628136961 is a deficient number, since it is larger than the sum of its proper divisors (258644703).

628136961 is a wasteful number, since it uses less digits than its factorization.

628136961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12316431.

The product of its digits is 93312, while the sum is 42.

The square root of 628136961 is about 25062.6606927517. The cubic root of 628136961 is about 856.4160209023.

The spelling of 628136961 in words is "six hundred twenty-eight million, one hundred thirty-six thousand, nine hundred sixty-one".