665007412 has 24 divisors (see below), whose sum is σ = 1208990720. Its totient is φ = 319718880.

The previous prime is 665007407. The next prime is 665007419. The reversal of 665007412 is 214700566.

It is a happy number.

665007412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665007419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389 + ... + 36547.

Almost surely, 2^665007412 is an apocalyptic number.

665007412 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

665007412 is a deficient number, since it is larger than the sum of its proper divisors (543983308).

665007412 is a wasteful number, since it uses less digits than its factorization.

665007412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34351 (or 34349 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 665007412 is about 25787.7376285707. The cubic root of 665007412 is about 872.8551164028.

Adding to 665007412 its reverse (214700566), we get a palindrome (879707978).

The spelling of 665007412 in words is "six hundred sixty-five million, seven thousand, four hundred twelve".