146473661 has 4 divisors (see below), whose sum is σ = 146601852. Its totient is φ = 146345472.

The previous prime is 146473633. The next prime is 146473673. The reversal of 146473661 is 166374641.

146473661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166374641 = 12161 ⋅13681.

It can be written as a sum of positive squares in 2 ways, for example, as 69139225 + 77334436 = 8315^2 + 8794^2 .

It is a cyclic number.

It is not a de Polignac number, because 146473661 - 2⁶ = 146473597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146472661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62366 + ... + 64671.

It is an arithmetic number, because the mean of its divisors is an integer number (36650463).

Almost surely, 2^146473661 is an apocalyptic number.

It is an amenable number.

146473661 is a deficient number, since it is larger than the sum of its proper divisors (128191).

146473661 is a wasteful number, since it uses less digits than its factorization.

146473661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128190.

The product of its digits is 72576, while the sum is 38.

The square root of 146473661 is about 12102.6303339398. The cubic root of 146473661 is about 527.1325635357.

The spelling of 146473661 in words is "one hundred forty-six million, four hundred seventy-three thousand, six hundred sixty-one".