628201393 has 4 divisors (see below), whose sum is σ = 649863540. Its totient is φ = 606539248.

The previous prime is 628201381. The next prime is 628201403. The reversal of 628201393 is 393102826.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 536941584 + 91259809 = 23172^2 + 9553^2 .

It is a cyclic number.

It is not a de Polignac number, because 628201393 - 2⁵ = 628201361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628201333) 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, 10831030 + ... + 10831087.

It is an arithmetic number, because the mean of its divisors is an integer number (162465885).

Almost surely, 2^628201393 is an apocalyptic number.

It is an amenable number.

628201393 is a deficient number, since it is larger than the sum of its proper divisors (21662147).

628201393 is a wasteful number, since it uses less digits than its factorization.

628201393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21662146.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 628201393 is about 25063.9460779822. The cubic root of 628201393 is about 856.4453025791.

The spelling of 628201393 in words is "six hundred twenty-eight million, two hundred one thousand, three hundred ninety-three".