145684907 has 2 divisors, whose sum is σ = 145684908. Its totient is φ = 145684906.

The previous prime is 145684879. The next prime is 145684919. The reversal of 145684907 is 709486541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145684907 - 2⁶ = 145684843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145684937) 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, 72842453 + 72842454.

It is an arithmetic number, because the mean of its divisors is an integer number (72842454).

Almost surely, 2^145684907 is an apocalyptic number.

145684907 is a deficient number, since it is larger than the sum of its proper divisors (1).

145684907 is an equidigital number, since it uses as much as digits as its factorization.

145684907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 145684907 is about 12070.0002899751. Note that the first 3 decimals coincide. The cubic root of 145684907 is about 526.1846650740.

The spelling of 145684907 in words is "one hundred forty-five million, six hundred eighty-four thousand, nine hundred seven".