665061024 has 24 divisors (see below), whose sum is σ = 1745785440. Its totient is φ = 221686976.

The previous prime is 665061017. The next prime is 665061043. The reversal of 665061024 is 420160566.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×665061024³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665060982 and 665061000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3463764 + ... + 3463955.

It is an arithmetic number, because the mean of its divisors is an integer number (72741060).

Almost surely, 2^665061024 is an apocalyptic number.

It is an amenable number.

665061024 is an abundant number, since it is smaller than the sum of its proper divisors (1080724416).

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

665061024 is a wasteful number, since it uses less digits than its factorization.

665061024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927732 (or 6927724 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 665061024 is about 25788.7770939221. Note that the first 3 decimals coincide. The cubic root of 665061024 is about 872.8785719063.

The spelling of 665061024 in words is "six hundred sixty-five million, sixty-one thousand, twenty-four".