628246237 has 8 divisors (see below), whose sum is σ = 666122616. Its totient is φ = 590472192.

The previous prime is 628246207. The next prime is 628246253. The reversal of 628246237 is 732642826.

It can be written as a sum of positive squares in 4 ways, for example, as 304642116 + 323604121 = 17454^2 + 17989^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 628246237 - 2⁷ = 628246109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 628246237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628246207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12748 + ... + 37669.

It is an arithmetic number, because the mean of its divisors is an integer number (83265327).

Almost surely, 2^628246237 is an apocalyptic number.

It is an amenable number.

628246237 is a deficient number, since it is larger than the sum of its proper divisors (37876379).

628246237 is a wasteful number, since it uses less digits than its factorization.

628246237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51167.

The product of its digits is 193536, while the sum is 40.

The square root of 628246237 is about 25064.8406537923. The cubic root of 628246237 is about 856.4656811390.

The spelling of 628246237 in words is "six hundred twenty-eight million, two hundred forty-six thousand, two hundred thirty-seven".