664838468470 has 64 divisors (see below), whose sum is σ = 1352168562240. Its totient is φ = 233137676800.

The previous prime is 664838468467. The next prime is 664838468561. The reversal of 664838468470 is 74864838466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2492064 + ... + 2745916.

It is an arithmetic number, because the mean of its divisors is an integer number (21127633785).

Almost surely, 2^664838468470 is an apocalyptic number.

664838468470 is an abundant number, since it is smaller than the sum of its proper divisors (687330093770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664838468470 is a wasteful number, since it uses less digits than its factorization.

664838468470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254721.

The product of its (nonzero) digits is 148635648, while the sum is 64.

The spelling of 664838468470 in words is "six hundred sixty-four billion, eight hundred thirty-eight million, four hundred sixty-eight thousand, four hundred seventy".