145856687 has 2 divisors, whose sum is σ = 145856688. Its totient is φ = 145856686.

The previous prime is 145856677. The next prime is 145856707. The reversal of 145856687 is 786658541.

145856687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145856687 - 2¹⁸ = 145594543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145856657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72928343 + 72928344.

It is an arithmetic number, because the mean of its divisors is an integer number (72928344).

Almost surely, 2^145856687 is an apocalyptic number.

145856687 is a deficient number, since it is larger than the sum of its proper divisors (1).

145856687 is an equidigital number, since it uses as much as digits as its factorization.

145856687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 50.

The square root of 145856687 is about 12077.1141834463. The cubic root of 145856687 is about 526.3913954777.

The spelling of 145856687 in words is "one hundred forty-five million, eight hundred fifty-six thousand, six hundred eighty-seven".