632828857 has 2 divisors, whose sum is σ = 632828858. Its totient is φ = 632828856.

The previous prime is 632828837. The next prime is 632828881. The reversal of 632828857 is 758828236.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 584720761 + 48108096 = 24181^2 + 6936^2 .

It is a cyclic number.

It is not a de Polignac number, because 632828857 - 2²³ = 624440249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 632828857.

It is not a weakly prime, because it can be changed into another prime (632828837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316414428 + 316414429.

It is an arithmetic number, because the mean of its divisors is an integer number (316414429).

Almost surely, 2^632828857 is an apocalyptic number.

It is an amenable number.

632828857 is a deficient number, since it is larger than the sum of its proper divisors (1).

632828857 is an equidigital number, since it uses as much as digits as its factorization.

632828857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 49.

The square root of 632828857 is about 25156.0898591176. The cubic root of 632828857 is about 858.5430790230.

The spelling of 632828857 in words is "six hundred thirty-two million, eight hundred twenty-eight thousand, eight hundred fifty-seven".