628916453 has 8 divisors (see below), whose sum is σ = 693800640. Its totient is φ = 565317280.

The previous prime is 628916443. The next prime is 628916461. The reversal of 628916453 is 354619826.

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

It is not a de Polignac number, because 628916453 - 2¹⁶ = 628850917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628916413) 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, 320225 + ... + 322182.

It is an arithmetic number, because the mean of its divisors is an integer number (86725080).

Almost surely, 2^628916453 is an apocalyptic number.

It is an amenable number.

628916453 is a deficient number, since it is larger than the sum of its proper divisors (64884187).

628916453 is a wasteful number, since it uses less digits than its factorization.

628916453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642507.

The product of its digits is 311040, while the sum is 44.

The square root of 628916453 is about 25078.2067341347. The cubic root of 628916453 is about 856.7701334216.

The spelling of 628916453 in words is "six hundred twenty-eight million, nine hundred sixteen thousand, four hundred fifty-three".