628759943 has 16 divisors (see below), whose sum is σ = 770031360. Its totient is φ = 501115776.

The previous prime is 628759939. The next prime is 628759979. The reversal of 628759943 is 349957826.

It is a happy number.

It is not a de Polignac number, because 628759943 - 2² = 628759939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628759903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21953 + ... + 41706.

It is an arithmetic number, because the mean of its divisors is an integer number (48126960).

Almost surely, 2^628759943 is an apocalyptic number.

628759943 is a deficient number, since it is larger than the sum of its proper divisors (141271417).

628759943 is a wasteful number, since it uses less digits than its factorization.

628759943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63766.

The product of its digits is 3265920, while the sum is 53.

The square root of 628759943 is about 25075.0861015471. The cubic root of 628759943 is about 856.6990565624.

The spelling of 628759943 in words is "six hundred twenty-eight million, seven hundred fifty-nine thousand, nine hundred forty-three".