144367645 has 4 divisors (see below), whose sum is σ = 173241180. Its totient is φ = 115494112.

The previous prime is 144367607. The next prime is 144367661. The reversal of 144367645 is 546763441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546763441 = 7 ⋅78109063.

It can be written as a sum of positive squares in 2 ways, for example, as 70459236 + 73908409 = 8394^2 + 8597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144367645 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144367598 and 144367607.

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, 14436760 + ... + 14436769.

It is an arithmetic number, because the mean of its divisors is an integer number (43310295).

Almost surely, 2^144367645 is an apocalyptic number.

It is an amenable number.

144367645 is a deficient number, since it is larger than the sum of its proper divisors (28873535).

144367645 is an equidigital number, since it uses as much as digits as its factorization.

144367645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28873534.

The product of its digits is 241920, while the sum is 40.

The square root of 144367645 is about 12015.3087767231. The cubic root of 144367645 is about 524.5939657220.

The spelling of 144367645 in words is "one hundred forty-four million, three hundred sixty-seven thousand, six hundred forty-five".