145985687 has 2 divisors, whose sum is σ = 145985688. Its totient is φ = 145985686.

The previous prime is 145985663. The next prime is 145985699. The reversal of 145985687 is 786589541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145985687 - 2²⁶ = 78876823 is a prime.

It is a super-3 number, since 3×145985687³ (a number of 25 digits) contains 333 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 (145985617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72992843 + 72992844.

It is an arithmetic number, because the mean of its divisors is an integer number (72992844).

Almost surely, 2^145985687 is an apocalyptic number.

145985687 is a deficient number, since it is larger than the sum of its proper divisors (1).

145985687 is an equidigital number, since it uses as much as digits as its factorization.

145985687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 53.

The square root of 145985687 is about 12082.4536829238. The cubic root of 145985687 is about 526.5465351616.

The spelling of 145985687 in words is "one hundred forty-five million, nine hundred eighty-five thousand, six hundred eighty-seven".