632778 has 16 divisors (see below), whose sum is σ = 1273536. Its totient is φ = 209600.

The previous prime is 632777. The next prime is 632813. The reversal of 632778 is 877236.

It is a Curzon number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (632773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378 + ... + 1778.

It is an arithmetic number, because the mean of its divisors is an integer number (79596).

2⁶³²⁷⁷⁸ is an apocalyptic number.

632778 is an abundant number, since it is smaller than the sum of its proper divisors (640758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

632778 is a wasteful number, since it uses less digits than its factorization.

632778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669.

The product of its digits is 14112, while the sum is 33.

The square root of 632778 is about 795.4734439313. The cubic root of 632778 is about 85.8520079600.

The spelling of 632778 in words is "six hundred thirty-two thousand, seven hundred seventy-eight".