664102407 has 16 divisors (see below), whose sum is σ = 931536000. Its totient is φ = 420219744.

The previous prime is 664102403. The next prime is 664102409. The reversal of 664102407 is 704201466.

664102407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664102407 - 2² = 664102403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664102403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59557 + ... + 69822.

It is an arithmetic number, because the mean of its divisors is an integer number (58221000).

Almost surely, 2^664102407 is an apocalyptic number.

664102407 is a deficient number, since it is larger than the sum of its proper divisors (267433593).

664102407 is a wasteful number, since it uses less digits than its factorization.

664102407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129470.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 664102407 is about 25770.1844580127. The cubic root of 664102407 is about 872.4589820428.

The spelling of 664102407 in words is "six hundred sixty-four million, one hundred two thousand, four hundred seven".