146640 has 80 divisors (see below), whose sum is σ = 499968. Its totient is φ = 35328.

The previous prime is 146639. The next prime is 146647. The reversal of 146640 is 46641.

146640 = T₃₂ + T₃₃ + ... + T₉₆.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 146640.

It is not an unprimeable number, because it can be changed into a prime (146647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3097 + ... + 3143.

2¹⁴⁶⁶⁴⁰ is an apocalyptic number.

146640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249984).

146640 is an abundant number, since it is smaller than the sum of its proper divisors (353328).

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

146640 is a wasteful number, since it uses less digits than its factorization.

146640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 146640 is about 382.9360259887. The cubic root of 146640 is about 52.7332029506.

Subtracting from 146640 its reverse (46641), we obtain a palindrome (99999).

The spelling of 146640 in words is "one hundred forty-six thousand, six hundred forty".