628604927 has 4 divisors (see below), whose sum is σ = 655935600. Its totient is φ = 601274256.

The previous prime is 628604897. The next prime is 628604929. The reversal of 628604927 is 729406826.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628604927 - 2²⁶ = 561496063 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628604929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13665302 + ... + 13665347.

It is an arithmetic number, because the mean of its divisors is an integer number (163983900).

Almost surely, 2^628604927 is an apocalyptic number.

628604927 is a deficient number, since it is larger than the sum of its proper divisors (27330673).

628604927 is a wasteful number, since it uses less digits than its factorization.

628604927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27330672.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 628604927 is about 25071.9948747602. The cubic root of 628604927 is about 856.6286465553.

The spelling of 628604927 in words is "six hundred twenty-eight million, six hundred four thousand, nine hundred twenty-seven".