146591887 has 8 divisors (see below), whose sum is σ = 157964240. Its totient is φ = 135233280.

The previous prime is 146591881. The next prime is 146591899. The reversal of 146591887 is 788195641.

146591887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-146591887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146591887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146591881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33439 + ... + 37567.

It is an arithmetic number, because the mean of its divisors is an integer number (19745530).

Almost surely, 2^146591887 is an apocalyptic number.

146591887 is a deficient number, since it is larger than the sum of its proper divisors (11372353).

146591887 is a wasteful number, since it uses less digits than its factorization.

146591887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873.

The product of its digits is 483840, while the sum is 49.

The square root of 146591887 is about 12107.5136588814. The cubic root of 146591887 is about 527.2743501526.

The spelling of 146591887 in words is "one hundred forty-six million, five hundred ninety-one thousand, eight hundred eighty-seven".