1664546061 has 8 divisors (see below), whose sum is σ = 2219623200. Its totient is φ = 1109583152.

The previous prime is 1664546021. The next prime is 1664546071. The reversal of 1664546061 is 1606454661.

It is a happy number.

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 1664546061 - 2⁶ = 1664545997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664546021) 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, 14890 + ... + 59588.

It is an arithmetic number, because the mean of its divisors is an integer number (277452900).

Almost surely, 2^1664546061 is an apocalyptic number.

It is an amenable number.

1664546061 is a deficient number, since it is larger than the sum of its proper divisors (555077139).

1664546061 is a wasteful number, since it uses less digits than its factorization.

1664546061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57115.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1664546061 is about 40798.8487705229. The cubic root of 1664546061 is about 1185.1280368695.

The spelling of 1664546061 in words is "one billion, six hundred sixty-four million, five hundred forty-six thousand, sixty-one".