145566634 has 4 divisors (see below), whose sum is σ = 218349954. Its totient is φ = 72783316.

The previous prime is 145566601. The next prime is 145566637. The reversal of 145566634 is 436665541.

145566634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436665541 = 13 ⋅33589657.

It can be written as a sum of positive squares in only one way, i.e., 101304225 + 44262409 = 10065^2 + 6653^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (145566637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36391657 + ... + 36391660.

Almost surely, 2^145566634 is an apocalyptic number.

145566634 is a deficient number, since it is larger than the sum of its proper divisors (72783320).

145566634 is an equidigital number, since it uses as much as digits as its factorization.

145566634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72783319.

The product of its digits is 259200, while the sum is 40.

The square root of 145566634 is about 12065.0998338182. The cubic root of 145566634 is about 526.0422337382.

The spelling of 145566634 in words is "one hundred forty-five million, five hundred sixty-six thousand, six hundred thirty-four".