145587647 has 4 divisors (see below), whose sum is σ = 145645296. Its totient is φ = 145530000.

The previous prime is 145587619. The next prime is 145587691. The reversal of 145587647 is 746785541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746785541 = 37 ⋅20183393.

It is a cyclic number.

It is not a de Polignac number, because 145587647 - 2⁸ = 145587391 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 (145557647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24854 + ... + 30147.

It is an arithmetic number, because the mean of its divisors is an integer number (36411324).

Almost surely, 2^145587647 is an apocalyptic number.

145587647 is a deficient number, since it is larger than the sum of its proper divisors (57649).

145587647 is an equidigital number, since it uses as much as digits as its factorization.

145587647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57648.

The product of its digits is 940800, while the sum is 47.

The square root of 145587647 is about 12065.9706198880. The cubic root of 145587647 is about 526.0675444689.

The spelling of 145587647 in words is "one hundred forty-five million, five hundred eighty-seven thousand, six hundred forty-seven".