146645621 has 16 divisors (see below), whose sum is σ = 158760000. Its totient is φ = 134946048.

The previous prime is 146645581. The next prime is 146645623. The reversal of 146645621 is 126546641.

It is a cyclic number.

It is not a de Polignac number, because 146645621 - 2²² = 142451317 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 (146645623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293630 + ... + 294128.

It is an arithmetic number, because the mean of its divisors is an integer number (9922500).

Almost surely, 2^146645621 is an apocalyptic number.

It is an amenable number.

146645621 is a deficient number, since it is larger than the sum of its proper divisors (12114379).

146645621 is a wasteful number, since it uses less digits than its factorization.

146645621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868.

The product of its digits is 34560, while the sum is 35.

The square root of 146645621 is about 12109.7324908521. The cubic root of 146645621 is about 527.3387673120.

The spelling of 146645621 in words is "one hundred forty-six million, six hundred forty-five thousand, six hundred twenty-one".