664158011 has 4 divisors (see below), whose sum is σ = 724536024. Its totient is φ = 603780000.

The previous prime is 664157951. The next prime is 664158013. The reversal of 664158011 is 110851466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 664158011 - 2¹⁸ = 663895867 is a prime.

It is a super-2 number, since 2×664158011² = 882211727150952242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664158013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30188990 + ... + 30189011.

It is an arithmetic number, because the mean of its divisors is an integer number (181134006).

Almost surely, 2^664158011 is an apocalyptic number.

664158011 is a deficient number, since it is larger than the sum of its proper divisors (60378013).

664158011 is a wasteful number, since it uses less digits than its factorization.

664158011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60378012.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 664158011 is about 25771.2632790867. The cubic root of 664158011 is about 872.4833311266.

The spelling of 664158011 in words is "six hundred sixty-four million, one hundred fifty-eight thousand, eleven".