146947687 has 4 divisors (see below), whose sum is σ = 147098160. Its totient is φ = 146797216.

The previous prime is 146947679. The next prime is 146947739. The reversal of 146947687 is 786749641.

146947687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786749641 = 197 ⋅3993653.

It is a cyclic number.

It is not a de Polignac number, because 146947687 - 2³ = 146947679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146947607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73762 + ... + 75727.

It is an arithmetic number, because the mean of its divisors is an integer number (36774540).

Almost surely, 2^146947687 is an apocalyptic number.

146947687 is a deficient number, since it is larger than the sum of its proper divisors (150473).

146947687 is an equidigital number, since it uses as much as digits as its factorization.

146947687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150472.

The product of its digits is 2032128, while the sum is 52.

The square root of 146947687 is about 12122.1981092539. The cubic root of 146947687 is about 527.7005961998.

The spelling of 146947687 in words is "one hundred forty-six million, nine hundred forty-seven thousand, six hundred eighty-seven".