144722657 has 8 divisors (see below), whose sum is σ = 146059200. Its totient is φ = 143391280.

The previous prime is 144722623. The next prime is 144722659. The reversal of 144722657 is 756227441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144722657 - 2¹⁴ = 144706273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144722657.

It is not an unprimeable number, because it can be changed into a prime (144722659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73982 + ... + 75912.

It is an arithmetic number, because the mean of its divisors is an integer number (18257400).

Almost surely, 2^144722657 is an apocalyptic number.

It is an amenable number.

144722657 is a deficient number, since it is larger than the sum of its proper divisors (1336543).

144722657 is a wasteful number, since it uses less digits than its factorization.

144722657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583.

The product of its digits is 94080, while the sum is 38.

The square root of 144722657 is about 12030.0730255473. The cubic root of 144722657 is about 525.0236204036.

The spelling of 144722657 in words is "one hundred forty-four million, seven hundred twenty-two thousand, six hundred fifty-seven".