146365821 has 24 divisors (see below), whose sum is σ = 248153984. Its totient is φ = 81375840.

The previous prime is 146365819. The next prime is 146365841. The reversal of 146365821 is 128563641.

It is a happy number.

146365821 is a `hidden beast` number, since 1 + 46 + 36 + 582 + 1 = 666.

It is not a de Polignac number, because 146365821 - 2¹ = 146365819 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 (146365811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29065 + ... + 33726.

Almost surely, 2^146365821 is an apocalyptic number.

It is an amenable number.

146365821 is a deficient number, since it is larger than the sum of its proper divisors (101788163).

146365821 is a wasteful number, since it uses less digits than its factorization.

146365821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62841 (or 62838 counting only the distinct ones).

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

The square root of 146365821 is about 12098.1742837504. The cubic root of 146365821 is about 527.0031661370.

The spelling of 146365821 in words is "one hundred forty-six million, three hundred sixty-five thousand, eight hundred twenty-one".