145662773 has 4 divisors (see below), whose sum is σ = 145805088. Its totient is φ = 145520460.

The previous prime is 145662739. The next prime is 145662779. The reversal of 145662773 is 377266541.

145662773 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 377266541 = 37 ⋅10196393.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145662773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145662773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145662779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69611 + ... + 71672.

It is an arithmetic number, because the mean of its divisors is an integer number (36451272).

Almost surely, 2^145662773 is an apocalyptic number.

It is an amenable number.

145662773 is a deficient number, since it is larger than the sum of its proper divisors (142315).

145662773 is a wasteful number, since it uses less digits than its factorization.

145662773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142314.

The product of its digits is 211680, while the sum is 41.

The square root of 145662773 is about 12069.0833537597. The cubic root of 145662773 is about 526.1580158681.

The spelling of 145662773 in words is "one hundred forty-five million, six hundred sixty-two thousand, seven hundred seventy-three".