146257985 has 8 divisors (see below), whose sum is σ = 178129536. Its totient is φ = 115259760.

The previous prime is 146257981. The next prime is 146257997. The reversal of 146257985 is 589752641.

It is a happy number.

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

It is not a de Polignac number, because 146257985 - 2² = 146257981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146257981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217961 + ... + 218630.

It is an arithmetic number, because the mean of its divisors is an integer number (22266192).

Almost surely, 2^146257985 is an apocalyptic number.

It is an amenable number.

146257985 is a deficient number, since it is larger than the sum of its proper divisors (31871551).

146257985 is an equidigital number, since it uses as much as digits as its factorization.

146257985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436663.

The product of its digits is 604800, while the sum is 47.

The square root of 146257985 is about 12093.7167570603. The cubic root of 146257985 is about 526.8737099671.

The spelling of 146257985 in words is "one hundred forty-six million, two hundred fifty-seven thousand, nine hundred eighty-five".