145643606 has 4 divisors (see below), whose sum is σ = 218465412. Its totient is φ = 72821802.

The previous prime is 145643599. The next prime is 145643609. The reversal of 145643606 is 606346541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 606346541 = 73 ⋅8306117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145643609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36410900 + ... + 36410903.

It is an arithmetic number, because the mean of its divisors is an integer number (54616353).

Almost surely, 2^145643606 is an apocalyptic number.

145643606 is a deficient number, since it is larger than the sum of its proper divisors (72821806).

145643606 is an equidigital number, since it uses as much as digits as its factorization.

145643606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72821805.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 145643606 is about 12068.2892739609. The cubic root of 145643606 is about 526.1349367316.

The spelling of 145643606 in words is "one hundred forty-five million, six hundred forty-three thousand, six hundred six".