638061 has 8 divisors (see below), whose sum is σ = 900864. Its totient is φ = 400320.

The previous prime is 638059. The next prime is 638063. The reversal of 638061 is 160836.

It is an interprime number because it is at equal distance from previous prime (638059) and next prime (638063).

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

It is not a de Polignac number, because 638061 - 2¹ = 638059 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638063) 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, 6205 + ... + 6306.

It is an arithmetic number, because the mean of its divisors is an integer number (112608).

2⁶³⁸⁰⁶¹ is an apocalyptic number.

It is an amenable number.

638061 is a deficient number, since it is larger than the sum of its proper divisors (262803).

638061 is a wasteful number, since it uses less digits than its factorization.

638061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12531.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 638061 is about 798.7872057063. The cubic root of 638061 is about 86.0902693770.

Adding to 638061 its reverse (160836), we get a palindrome (798897).

It can be divided in two parts, 6380 and 61, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 638061 in words is "six hundred thirty-eight thousand, sixty-one".