145674773 has 4 divisors (see below), whose sum is σ = 146479788. Its totient is φ = 144869760.

The previous prime is 145674733. The next prime is 145674787. The reversal of 145674773 is 377476541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13010449 + 132664324 = 3607^2 + 11518^2 .

It is a cyclic number.

It is not a de Polignac number, because 145674773 - 2¹² = 145670677 is a prime.

It is a super-2 number, since 2×145674773² = 42442278977203058, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145674733) 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 in 3 ways as a sum of consecutive naturals, for example, 402236 + ... + 402597.

It is an arithmetic number, because the mean of its divisors is an integer number (36619947).

Almost surely, 2^145674773 is an apocalyptic number.

It is an amenable number.

145674773 is a deficient number, since it is larger than the sum of its proper divisors (805015).

145674773 is an equidigital number, since it uses as much as digits as its factorization.

145674773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805014.

The product of its digits is 493920, while the sum is 44.

The square root of 145674773 is about 12069.5804815246. The cubic root of 145674773 is about 526.1724641326.

The spelling of 145674773 in words is "one hundred forty-five million, six hundred seventy-four thousand, seven hundred seventy-three".