628873265 has 16 divisors (see below), whose sum is σ = 826595280. Its totient is φ = 457175040.

The previous prime is 628873253. The next prime is 628873277. The reversal of 628873265 is 562378826.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (628873253) and next prime (628873277).

It can be written as a sum of positive squares in 8 ways, for example, as 1420864 + 627452401 = 1192^2 + 25049^2 .

It is not a de Polignac number, because 628873265 - 2¹⁸ = 628611121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125096 + ... + 130025.

It is an arithmetic number, because the mean of its divisors is an integer number (51662205).

Almost surely, 2^628873265 is an apocalyptic number.

It is an amenable number.

628873265 is a deficient number, since it is larger than the sum of its proper divisors (197722015).

628873265 is a wasteful number, since it uses less digits than its factorization.

628873265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255172.

The product of its digits is 967680, while the sum is 47.

The square root of 628873265 is about 25077.3456529992. The cubic root of 628873265 is about 856.7505213648.

The spelling of 628873265 in words is "six hundred twenty-eight million, eight hundred seventy-three thousand, two hundred sixty-five".