146115661 has 8 divisors (see below), whose sum is σ = 148712760. Its totient is φ = 143539968.

The previous prime is 146115623. The next prime is 146115707. The reversal of 146115661 is 166511641.

It can be written as a sum of positive squares in 4 ways, for example, as 17724100 + 128391561 = 4210^2 + 11331^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 146115661 - 2⁷ = 146115533 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 (146115611) 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, 8745 + ... + 19201.

It is an arithmetic number, because the mean of its divisors is an integer number (18589095).

Almost surely, 2^146115661 is an apocalyptic number.

It is an amenable number.

146115661 is a deficient number, since it is larger than the sum of its proper divisors (2597099).

146115661 is a wasteful number, since it uses less digits than its factorization.

146115661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10703.

The product of its digits is 4320, while the sum is 31.

The square root of 146115661 is about 12087.8311123212. The cubic root of 146115661 is about 526.7027538074.

The spelling of 146115661 in words is "one hundred forty-six million, one hundred fifteen thousand, six hundred sixty-one".