145347647 has 2 divisors, whose sum is σ = 145347648. Its totient is φ = 145347646.

The previous prime is 145347619. The next prime is 145347659. The reversal of 145347647 is 746743541.

It is a strong prime.

It is an emirp because it is prime and its reverse (746743541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145347647 - 2¹⁰ = 145346623 is a prime.

It is a super-2 number, since 2×145347647² = 42251876976873218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145347607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72673823 + 72673824.

It is an arithmetic number, because the mean of its divisors is an integer number (72673824).

Almost surely, 2^145347647 is an apocalyptic number.

145347647 is a deficient number, since it is larger than the sum of its proper divisors (1).

145347647 is an equidigital number, since it uses as much as digits as its factorization.

145347647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 41.

The square root of 145347647 is about 12056.0211927485. The cubic root of 145347647 is about 525.7783128518.

The spelling of 145347647 in words is "one hundred forty-five million, three hundred forty-seven thousand, six hundred forty-seven".