145320634 has 4 divisors (see below), whose sum is σ = 217980954. Its totient is φ = 72660316.

The previous prime is 145320629. The next prime is 145320667. The reversal of 145320634 is 436023541.

145320634 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.

It can be written as a sum of positive squares in only one way, i.e., 104960025 + 40360609 = 10245^2 + 6353^2 .

It is a super-2 number, since 2×145320634² = 42236173332323912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36330157 + ... + 36330160.

Almost surely, 2^145320634 is an apocalyptic number.

145320634 is a deficient number, since it is larger than the sum of its proper divisors (72660320).

145320634 is an equidigital number, since it uses as much as digits as its factorization.

145320634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72660319.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 145320634 is about 12054.9008291234. The cubic root of 145320634 is about 525.7457386987.

The spelling of 145320634 in words is "one hundred forty-five million, three hundred twenty thousand, six hundred thirty-four".