664579080 has 320 divisors, whose sum is σ = 2524737600. Its totient is φ = 155312640.

The previous prime is 664579073. The next prime is 664579117. The reversal of 664579080 is 80975466.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 1033239 + ... + 1033881.

It is an arithmetic number, because the mean of its divisors is an integer number (7889805).

Almost surely, 2^664579080 is an apocalyptic number.

664579080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664579080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262368800).

664579080 is an abundant number, since it is smaller than the sum of its proper divisors (1860158520).

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

664579080 is a wasteful number, since it uses less digits than its factorization.

664579080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 664579080 is about 25779.4313358538. The cubic root of 664579080 is about 872.6676738420.

The spelling of 664579080 in words is "six hundred sixty-four million, five hundred seventy-nine thousand, eighty".