143649 has 12 divisors (see below), whose sum is σ = 226512. Its totient is φ = 87000.

The previous prime is 143629. The next prime is 143651. The reversal of 143649 is 946341.

143649 is a `hidden beast` number, since 14 + 3 + 649 = 666.

It is not a de Polignac number, because 143649 - 2⁵ = 143617 is a prime.

143649 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143649.

It is not an unprimeable number, because it can be changed into a prime (143609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627 + ... + 824.

It is an arithmetic number, because the mean of its divisors is an integer number (18876).

2¹⁴³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

143649 is a deficient number, since it is larger than the sum of its proper divisors (82863).

143649 is a wasteful number, since it uses less digits than its factorization.

143649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1465 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 143649 is about 379.0105539428. The cubic root of 143649 is about 52.3722061876.

It can be divided in two parts, 1436 and 49, that added together give a triangular number (1485 = T₅₄).

The spelling of 143649 in words is "one hundred forty-three thousand, six hundred forty-nine".