145985699 has 2 divisors, whose sum is σ = 145985700. Its totient is φ = 145985698.

The previous prime is 145985687. The next prime is 145985729. The reversal of 145985699 is 996589541.

It is a weak prime.

It is an emirp because it is prime and its reverse (996589541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145985699 is a prime.

It is a super-3 number, since 3×145985699³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145985659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72992849 + 72992850.

It is an arithmetic number, because the mean of its divisors is an integer number (72992850).

Almost surely, 2^145985699 is an apocalyptic number.

145985699 is a deficient number, since it is larger than the sum of its proper divisors (1).

145985699 is an equidigital number, since it uses as much as digits as its factorization.

145985699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 56.

The square root of 145985699 is about 12082.4541795117. The cubic root of 145985699 is about 526.5465495889.

The spelling of 145985699 in words is "one hundred forty-five million, nine hundred eighty-five thousand, six hundred ninety-nine".