664610323435 has 16 divisors (see below), whose sum is σ = 798613487424. Its totient is φ = 530968015872.

The previous prime is 664610323417. The next prime is 664610323441. The reversal of 664610323435 is 534323016466.

It is a cyclic number.

It is not a de Polignac number, because 664610323435 - 2²¹ = 664608226283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664610323391 and 664610323400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11391699 + ... + 11449891.

It is an arithmetic number, because the mean of its divisors is an integer number (49913342964).

Almost surely, 2^664610323435 is an apocalyptic number.

664610323435 is a deficient number, since it is larger than the sum of its proper divisors (134003163989).

664610323435 is a wasteful number, since it uses less digits than its factorization.

664610323435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61254.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 664610323435 in words is "six hundred sixty-four billion, six hundred ten million, three hundred twenty-three thousand, four hundred thirty-five".