146638 has 8 divisors (see below), whose sum is σ = 221832. Its totient is φ = 72696.

The previous prime is 146617. The next prime is 146639. The reversal of 146638 is 836641.

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 not an unprimeable number, because it can be changed into a prime (146639) by changing a digit.

146638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81 + ... + 547.

It is an arithmetic number, because the mean of its divisors is an integer number (27729).

2¹⁴⁶⁶³⁸ is an apocalyptic number.

146638 is a deficient number, since it is larger than the sum of its proper divisors (75194).

146638 is a wasteful number, since it uses less digits than its factorization.

146638 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 3456, while the sum is 28.

The square root of 146638 is about 382.9334145775. The cubic root of 146638 is about 52.7329632096.

It can be divided in two parts, 146 and 638, that added together give a square (784 = 28²).

The spelling of 146638 in words is "one hundred forty-six thousand, six hundred thirty-eight".