628127665 has 8 divisors (see below), whose sum is σ = 822276288. Its totient is φ = 456820080.

The previous prime is 628127653. The next prime is 628127701. The reversal of 628127665 is 566721826.

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

It is not a de Polignac number, because 628127665 - 2⁷ = 628127537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5710197 + ... + 5710306.

It is an arithmetic number, because the mean of its divisors is an integer number (102784536).

Almost surely, 2^628127665 is an apocalyptic number.

It is an amenable number.

628127665 is a deficient number, since it is larger than the sum of its proper divisors (194148623).

628127665 is a wasteful number, since it uses less digits than its factorization.

628127665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11420519.

The product of its digits is 241920, while the sum is 43.

The square root of 628127665 is about 25062.4752368955. The cubic root of 628127665 is about 856.4117960898.

The spelling of 628127665 in words is "six hundred twenty-eight million, one hundred twenty-seven thousand, six hundred sixty-five".