628967474 has 4 divisors (see below), whose sum is σ = 943451214. Its totient is φ = 314483736.

The previous prime is 628967473. The next prime is 628967491. The reversal of 628967474 is 474769826.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 474769826 = 2 ⋅237384913.

It can be written as a sum of positive squares in only one way, i.e., 371140225 + 257827249 = 19265^2 + 16057^2 .

It is not an unprimeable number, because it can be changed into a prime (628967473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157241867 + ... + 157241870.

Almost surely, 2^628967474 is an apocalyptic number.

628967474 is a deficient number, since it is larger than the sum of its proper divisors (314483740).

628967474 is a wasteful number, since it uses less digits than its factorization.

628967474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314483739.

The product of its digits is 4064256, while the sum is 53.

The square root of 628967474 is about 25079.2239513108. The cubic root of 628967474 is about 856.7933013568.

The spelling of 628967474 in words is "six hundred twenty-eight million, nine hundred sixty-seven thousand, four hundred seventy-four".