646607011 has 8 divisors (see below), whose sum is σ = 660441600. Its totient is φ = 632903880.

The previous prime is 646606979. The next prime is 646607029. The reversal of 646607011 is 110706646.

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 646607011 - 2⁵ = 646606979 is a prime.

It is a super-3 number, since 3×646607011³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646607041) 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, 22891 + ... + 42628.

It is an arithmetic number, because the mean of its divisors is an integer number (82555200).

Almost surely, 2^646607011 is an apocalyptic number.

646607011 is a deficient number, since it is larger than the sum of its proper divisors (13834589).

646607011 is a wasteful number, since it uses less digits than its factorization.

646607011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65729.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 646607011 is about 25428.4685146393. The cubic root of 646607011 is about 864.7292239435.

The spelling of 646607011 in words is "six hundred forty-six million, six hundred seven thousand, eleven".