628245001 has 4 divisors (see below), whose sum is σ = 630465232. Its totient is φ = 626024772.

The previous prime is 628244989. The next prime is 628245029. The reversal of 628245001 is 100542826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 628245001 - 2¹⁹ = 627720713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628245601) 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 3 ways as a sum of consecutive naturals, for example, 1109691 + ... + 1110256.

It is an arithmetic number, because the mean of its divisors is an integer number (157616308).

Almost surely, 2^628245001 is an apocalyptic number.

It is an amenable number.

628245001 is a deficient number, since it is larger than the sum of its proper divisors (2220231).

628245001 is a wasteful number, since it uses less digits than its factorization.

628245001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220230.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 628245001 is about 25064.8159977288. The cubic root of 628245001 is about 856.4651194738.

Adding to 628245001 its reverse (100542826), we get a palindrome (728787827).

It can be divided in two parts, 6282 and 45001, that multiplied together give a palindrome (282696282).

The spelling of 628245001 in words is "six hundred twenty-eight million, two hundred forty-five thousand, one".