146687689 has 2 divisors, whose sum is σ = 146687690. Its totient is φ = 146687688.

The previous prime is 146687687. The next prime is 146687707. The reversal of 146687689 is 986786641.

It is a happy number.

146687689 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 can be written as a sum of positive squares in only one way, i.e., 117614025 + 29073664 = 10845^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 146687689 - 2¹ = 146687687 is a prime.

Together with 146687687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (146687683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73343844 + 73343845.

It is an arithmetic number, because the mean of its divisors is an integer number (73343845).

Almost surely, 2^146687689 is an apocalyptic number.

It is an amenable number.

146687689 is a deficient number, since it is larger than the sum of its proper divisors (1).

146687689 is an equidigital number, since it uses as much as digits as its factorization.

146687689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The square root of 146687689 is about 12111.4693163134. The cubic root of 146687689 is about 527.3891881068.

The spelling of 146687689 in words is "one hundred forty-six million, six hundred eighty-seven thousand, six hundred eighty-nine".