628753847 has 4 divisors (see below), whose sum is σ = 628804536. Its totient is φ = 628703160.

The previous prime is 628753813. The next prime is 628753859. The reversal of 628753847 is 748357826.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 628753847 - 2⁸ = 628753591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628753795 and 628753804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628753547) 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, 7148 + ... + 36174.

It is an arithmetic number, because the mean of its divisors is an integer number (157201134).

Almost surely, 2^628753847 is an apocalyptic number.

628753847 is a deficient number, since it is larger than the sum of its proper divisors (50689).

628753847 is a wasteful number, since it uses less digits than its factorization.

628753847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50688.

The product of its digits is 2257920, while the sum is 50.

The square root of 628753847 is about 25074.9645463359. The cubic root of 628753847 is about 856.6962879094.

The spelling of 628753847 in words is "six hundred twenty-eight million, seven hundred fifty-three thousand, eight hundred forty-seven".