628877433 has 4 divisors (see below), whose sum is σ = 838503248. Its totient is φ = 419251620.

The previous prime is 628877423. The next prime is 628877443. The reversal of 628877433 is 334778826.

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 an interprime number because it is at equal distance from previous prime (628877423) and next prime (628877443).

It is not a de Polignac number, because 628877433 - 2⁸ = 628877177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628877423) 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, 104812903 + ... + 104812908.

It is an arithmetic number, because the mean of its divisors is an integer number (209625812).

Almost surely, 2^628877433 is an apocalyptic number.

It is an amenable number.

628877433 is a deficient number, since it is larger than the sum of its proper divisors (209625815).

628877433 is a wasteful number, since it uses less digits than its factorization.

628877433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209625814.

The product of its digits is 1354752, while the sum is 48.

The square root of 628877433 is about 25077.4287557556. The cubic root of 628877433 is about 856.7524141300.

The spelling of 628877433 in words is "six hundred twenty-eight million, eight hundred seventy-seven thousand, four hundred thirty-three".