145709687 has 2 divisors, whose sum is σ = 145709688. Its totient is φ = 145709686.

The previous prime is 145709677. The next prime is 145709693. The reversal of 145709687 is 786907541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145709687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145709647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72854843 + 72854844.

It is an arithmetic number, because the mean of its divisors is an integer number (72854844).

Almost surely, 2^145709687 is an apocalyptic number.

145709687 is a deficient number, since it is larger than the sum of its proper divisors (1).

145709687 is an equidigital number, since it uses as much as digits as its factorization.

145709687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 145709687 is about 12071.0267583168. The cubic root of 145709687 is about 526.2144968460.

The spelling of 145709687 in words is "one hundred forty-five million, seven hundred nine thousand, six hundred eighty-seven".