145786723 has 4 divisors (see below), whose sum is σ = 146204800. Its totient is φ = 145368648.

The previous prime is 145786721. The next prime is 145786757. The reversal of 145786723 is 327687541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327687541 = 1481 ⋅221261.

It is a cyclic number.

It is not a de Polignac number, because 145786723 - 2¹ = 145786721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145786723.

It is not an unprimeable number, because it can be changed into a prime (145786721) 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, 208515 + ... + 209212.

It is an arithmetic number, because the mean of its divisors is an integer number (36551200).

Almost surely, 2^145786723 is an apocalyptic number.

145786723 is a deficient number, since it is larger than the sum of its proper divisors (418077).

145786723 is an equidigital number, since it uses as much as digits as its factorization.

145786723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418076.

The product of its digits is 282240, while the sum is 43.

The square root of 145786723 is about 12074.2172831203. The cubic root of 145786723 is about 526.3072161861.

The spelling of 145786723 in words is "one hundred forty-five million, seven hundred eighty-six thousand, seven hundred twenty-three".