145660673 has 2 divisors, whose sum is σ = 145660674. Its totient is φ = 145660672.

The previous prime is 145660667. The next prime is 145660687. The reversal of 145660673 is 376066541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134954689 + 10705984 = 11617^2 + 3272^2 .

It is an emirp because it is prime and its reverse (376066541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145660673 - 2⁶ = 145660609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145660663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72830336 + 72830337.

It is an arithmetic number, because the mean of its divisors is an integer number (72830337).

Almost surely, 2^145660673 is an apocalyptic number.

It is an amenable number.

145660673 is a deficient number, since it is larger than the sum of its proper divisors (1).

145660673 is an equidigital number, since it uses as much as digits as its factorization.

145660673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 145660673 is about 12068.9963542956. The cubic root of 145660673 is about 526.1554873402.

The spelling of 145660673 in words is "one hundred forty-five million, six hundred sixty thousand, six hundred seventy-three".