145686403 has 2 divisors, whose sum is σ = 145686404. Its totient is φ = 145686402.

The previous prime is 145686397. The next prime is 145686421. The reversal of 145686403 is 304686541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145686403 - 2⁵ = 145686371 is a prime.

It is not a weakly prime, because it can be changed into another prime (145686703) 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, 72843201 + 72843202.

It is an arithmetic number, because the mean of its divisors is an integer number (72843202).

Almost surely, 2^145686403 is an apocalyptic number.

145686403 is a deficient number, since it is larger than the sum of its proper divisors (1).

145686403 is an equidigital number, since it uses as much as digits as its factorization.

145686403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 145686403 is about 12070.0622616455. The cubic root of 145686403 is about 526.1864661518.

The spelling of 145686403 in words is "one hundred forty-five million, six hundred eighty-six thousand, four hundred three".