146536821 has 24 divisors (see below), whose sum is σ = 226234944. Its totient is φ = 91075200.

The previous prime is 146536811. The next prime is 146536847. The reversal of 146536821 is 128635641.

It is a happy number.

146536821 is a `hidden beast` number, since 1 + 46 + 536 + 82 + 1 = 666.

It is not a de Polignac number, because 146536821 - 2⁷ = 146536693 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146536801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11896 + ... + 20846.

It is an arithmetic number, because the mean of its divisors is an integer number (9426456).

Almost surely, 2^146536821 is an apocalyptic number.

It is an amenable number.

146536821 is a deficient number, since it is larger than the sum of its proper divisors (79698123).

146536821 is a wasteful number, since it uses less digits than its factorization.

146536821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081 (or 9078 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 146536821 is about 12105.2394028371. The cubic root of 146536821 is about 527.2083198370.

The spelling of 146536821 in words is "one hundred forty-six million, five hundred thirty-six thousand, eight hundred twenty-one".