628331413 has 4 divisors (see below), whose sum is σ = 633127968. Its totient is φ = 623534860.

The previous prime is 628331401. The next prime is 628331449. The reversal of 628331413 is 314133826.

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 a de Polignac number, because none of the positive numbers 2^k-628331413 is a prime.

It is a super-5 number, since 5×628331413⁵ (a number of 45 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628331213) 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, 2398081 + ... + 2398342.

It is an arithmetic number, because the mean of its divisors is an integer number (158281992).

Almost surely, 2^628331413 is an apocalyptic number.

It is an amenable number.

628331413 is a deficient number, since it is larger than the sum of its proper divisors (4796555).

628331413 is a wasteful number, since it uses less digits than its factorization.

628331413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796554.

The product of its digits is 10368, while the sum is 31.

The square root of 628331413 is about 25066.5397093416. The cubic root of 628331413 is about 856.5043851906.

It can be divided in two parts, 62833 and 1413, that added together give a palindrome (64246).

The spelling of 628331413 in words is "six hundred twenty-eight million, three hundred thirty-one thousand, four hundred thirteen".