143648649 has 6 divisors (see below), whose sum is σ = 207492506. Its totient is φ = 95765760.

The previous prime is 143648633. The next prime is 143648653. The reversal of 143648649 is 946846341.

It can be written as a sum of positive squares in only one way, i.e., 88962624 + 54686025 = 9432^2 + 7395^2 .

It is not a de Polignac number, because 143648649 - 2⁴ = 143648633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143648849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7980472 + ... + 7980489.

Almost surely, 2^143648649 is an apocalyptic number.

It is an amenable number.

143648649 is a deficient number, since it is larger than the sum of its proper divisors (63843857).

143648649 is a wasteful number, since it uses less digits than its factorization.

143648649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15960967 (or 15960964 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 143648649 is about 11985.3514341466. The cubic root of 143648649 is about 523.7216353119.

The spelling of 143648649 in words is "one hundred forty-three million, six hundred forty-eight thousand, six hundred forty-nine".