144681660 has 48 divisors (see below), whose sum is σ = 450122400. Its totient is φ = 38581632.

The previous prime is 144681643. The next prime is 144681673. The reversal of 144681660 is 66186441.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133425 + ... + 134504.

It is an arithmetic number, because the mean of its divisors is an integer number (9377550).

Almost surely, 2^144681660 is an apocalyptic number.

144681660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144681660 is an abundant number, since it is smaller than the sum of its proper divisors (305440740).

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

144681660 is a wasteful number, since it uses less digits than its factorization.

144681660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267947 (or 267939 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 144681660 is about 12028.3689667386. The cubic root of 144681660 is about 524.9740395326.

The spelling of 144681660 in words is "one hundred forty-four million, six hundred eighty-one thousand, six hundred sixty".