144633746 has 4 divisors (see below), whose sum is σ = 216950622. Its totient is φ = 72316872.

The previous prime is 144633743. The next prime is 144633761. The reversal of 144633746 is 647336441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 647336441 = 19 ⋅34070339.

It can be written as a sum of positive squares in only one way, i.e., 114811225 + 29822521 = 10715^2 + 5461^2 .

It is not an unprimeable number, because it can be changed into a prime (144633743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36158435 + ... + 36158438.

Almost surely, 2^144633746 is an apocalyptic number.

144633746 is a deficient number, since it is larger than the sum of its proper divisors (72316876).

144633746 is an equidigital number, since it uses as much as digits as its factorization.

144633746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72316875.

The product of its digits is 145152, while the sum is 38.

The square root of 144633746 is about 12026.3770937053. The cubic root of 144633746 is about 524.9160815225.

The spelling of 144633746 in words is "one hundred forty-four million, six hundred thirty-three thousand, seven hundred forty-six".