74638 has 8 divisors (see below), whose sum is σ = 113832. Its totient is φ = 36696.

The previous prime is 74623. The next prime is 74653. The reversal of 74638 is 83647.

It is an interprime number because it is at equal distance from previous prime (74623) and next prime (74653).

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

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145 + ... + 412.

It is an arithmetic number, because the mean of its divisors is an integer number (14229).

2⁷⁴⁶³⁸ is an apocalyptic number.

74638 is a deficient number, since it is larger than the sum of its proper divisors (39194).

74638 is a wasteful number, since it uses less digits than its factorization.

74638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626.

The product of its digits is 4032, while the sum is 28.

The square root of 74638 is about 273.1995607610. The cubic root of 74638 is about 42.1036743370.

Subtracting 74638 from its reverse (83647), we obtain a palindrome (9009).

It can be divided in two parts, 746 and 38, that added together give a square (784 = 28²).

The spelling of 74638 in words is "seventy-four thousand, six hundred thirty-eight".