145675693 has 4 divisors (see below), whose sum is σ = 145729948. Its totient is φ = 145621440.

The previous prime is 145675657. The next prime is 145675709. The reversal of 145675693 is 396576541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 396576541 = 823 ⋅481867.

It can be written as a sum of positive squares in 2 ways, for example, as 73051209 + 72624484 = 8547^2 + 8522^2 .

It is a cyclic number.

It is not a de Polignac number, because 145675693 - 2⁹ = 145675181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145685693) 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, 22878 + ... + 28543.

It is an arithmetic number, because the mean of its divisors is an integer number (36432487).

Almost surely, 2^145675693 is an apocalyptic number.

It is an amenable number.

145675693 is a deficient number, since it is larger than the sum of its proper divisors (54255).

145675693 is an equidigital number, since it uses as much as digits as its factorization.

145675693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54254.

The product of its digits is 680400, while the sum is 46.

The square root of 145675693 is about 12069.6185938082. The cubic root of 145675693 is about 526.1735718001.

It can be divided in two parts, 1456756 and 93, that added together give a square (1456849 = 1207²).

The spelling of 145675693 in words is "one hundred forty-five million, six hundred seventy-five thousand, six hundred ninety-three".