664460026 has 8 divisors (see below), whose sum is σ = 998040960. Its totient is φ = 331779708.

The previous prime is 664460003. The next prime is 664460029. The reversal of 664460026 is 620064466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 664459973 and 664460000.

It is not an unprimeable number, because it can be changed into a prime (664460029) 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, 223306 + ... + 226261.

It is an arithmetic number, because the mean of its divisors is an integer number (124755120).

Almost surely, 2^664460026 is an apocalyptic number.

664460026 is a deficient number, since it is larger than the sum of its proper divisors (333580934).

664460026 is a wasteful number, since it uses less digits than its factorization.

664460026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450308.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 664460026 is about 25777.1221434822. The cubic root of 664460026 is about 872.6155602637.

The spelling of 664460026 in words is "six hundred sixty-four million, four hundred sixty thousand, twenty-six".