632645 has 8 divisors (see below), whose sum is σ = 817656. Its totient is φ = 467136.

The previous prime is 632629. The next prime is 632647. The reversal of 632645 is 546236.

632645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 68644 + 564001 = 262^2 + 751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 632645 - 2⁴ = 632629 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4802 + ... + 4931.

It is an arithmetic number, because the mean of its divisors is an integer number (102207).

2⁶³²⁶⁴⁵ is an apocalyptic number.

632645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

632645 is a deficient number, since it is larger than the sum of its proper divisors (185011).

632645 is a wasteful number, since it uses less digits than its factorization.

632645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9751.

The product of its digits is 4320, while the sum is 26.

The square root of 632645 is about 795.3898415243. The cubic root of 632645 is about 85.8459926239.

The spelling of 632645 in words is "six hundred thirty-two thousand, six hundred forty-five".