145647023 has 4 divisors (see below), whose sum is σ = 145671480. Its totient is φ = 145622568.

The previous prime is 145647013. The next prime is 145647037. The reversal of 145647023 is 320746541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 145647023 - 2¹⁰ = 145645999 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 (145647013) 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, 3161 + ... + 17357.

It is an arithmetic number, because the mean of its divisors is an integer number (36417870).

Almost surely, 2^145647023 is an apocalyptic number.

145647023 is a deficient number, since it is larger than the sum of its proper divisors (24457).

145647023 is a wasteful number, since it uses less digits than its factorization.

145647023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24456.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 145647023 is about 12068.4308424915. The cubic root of 145647023 is about 526.1390513167.

The spelling of 145647023 in words is "one hundred forty-five million, six hundred forty-seven thousand, twenty-three".