144640574 has 16 divisors (see below), whose sum is σ = 241708320. Its totient is φ = 64454880.

The previous prime is 144640549. The next prime is 144640609. The reversal of 144640574 is 475046441.

144640574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95162 + ... + 96669.

It is an arithmetic number, because the mean of its divisors is an integer number (15106770).

Almost surely, 2^144640574 is an apocalyptic number.

144640574 is a deficient number, since it is larger than the sum of its proper divisors (97067746).

144640574 is a wasteful number, since it uses less digits than its factorization.

144640574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191875.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 144640574 is about 12026.6609663697. The cubic root of 144640574 is about 524.9243416294.

The spelling of 144640574 in words is "one hundred forty-four million, six hundred forty thousand, five hundred seventy-four".