628891167 has 8 divisors (see below), whose sum is σ = 839253424. Its totient is φ = 418894848.

The previous prime is 628891147. The next prime is 628891199. The reversal of 628891167 is 761198826.

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

It is not a de Polignac number, because 628891167 - 2⁶ = 628891103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628891147) 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 7 ways as a sum of consecutive naturals, for example, 87448 + ... + 94365.

It is an arithmetic number, because the mean of its divisors is an integer number (104906678).

Almost surely, 2^628891167 is an apocalyptic number.

628891167 is a deficient number, since it is larger than the sum of its proper divisors (210362257).

628891167 is a wasteful number, since it uses less digits than its factorization.

628891167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182969.

The product of its digits is 290304, while the sum is 48.

The square root of 628891167 is about 25077.7025861621. The cubic root of 628891167 is about 856.7586509319.

The spelling of 628891167 in words is "six hundred twenty-eight million, eight hundred ninety-one thousand, one hundred sixty-seven".