665070000 has 200 divisors, whose sum is σ = 2454414336. Its totient is φ = 151968000.

The previous prime is 665069983. The next prime is 665070017. The reversal of 665070000 is 70566.

It is an interprime number because it is at equal distance from previous prime (665069983) and next prime (665070017).

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 39 ways as a sum of consecutive naturals, for example, 208417 + ... + 211583.

Almost surely, 2^665070000 is an apocalyptic number.

665070000 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 665070000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227207168).

665070000 is an abundant number, since it is smaller than the sum of its proper divisors (1789344336).

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

665070000 is a wasteful number, since it uses less digits than its factorization.

665070000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205 (or 3184 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 665070000 is about 25788.9511225253. The cubic root of 665070000 is about 872.8824988256.

The spelling of 665070000 in words is "six hundred sixty-five million, seventy thousand".