146640621 has 8 divisors (see below), whose sum is σ = 200068000. Its totient is φ = 95486832.

The previous prime is 146640619. The next prime is 146640629. The reversal of 146640621 is 126046641.

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

It is not a de Polignac number, because 146640621 - 2¹ = 146640619 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 (146640629) 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 7 ways as a sum of consecutive naturals, for example, 568246 + ... + 568503.

It is an arithmetic number, because the mean of its divisors is an integer number (25008500).

Almost surely, 2^146640621 is an apocalyptic number.

It is an amenable number.

146640621 is a deficient number, since it is larger than the sum of its proper divisors (53427379).

146640621 is a wasteful number, since it uses less digits than its factorization.

146640621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136795.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 146640621 is about 12109.5260435741. The cubic root of 146640621 is about 527.3327738979.

The spelling of 146640621 in words is "one hundred forty-six million, six hundred forty thousand, six hundred twenty-one".