145887643 has 48 divisors (see below), whose sum is σ = 183859200. Its totient is φ = 114998400.

The previous prime is 145887631. The next prime is 145887647. The reversal of 145887643 is 346788541.

It is a happy number.

It is not a de Polignac number, because 145887643 - 2⁵ = 145887611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145887593 and 145887602.

It is not an unprimeable number, because it can be changed into a prime (145887647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1639143 + ... + 1639231.

It is an arithmetic number, because the mean of its divisors is an integer number (3830400).

Almost surely, 2^145887643 is an apocalyptic number.

145887643 is a deficient number, since it is larger than the sum of its proper divisors (37971557).

145887643 is a wasteful number, since it uses less digits than its factorization.

145887643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 173 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 145887643 is about 12078.3957130076. The cubic root of 145887643 is about 526.4286325303.

It can be divided in two parts, 145 and 887643, that added together give a palindrome (887788).

The spelling of 145887643 in words is "one hundred forty-five million, eight hundred eighty-seven thousand, six hundred forty-three".