665492652 has 48 divisors (see below), whose sum is σ = 1882204800. Its totient is φ = 201664080.

The previous prime is 665492647. The next prime is 665492657. The reversal of 665492652 is 256294566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (665492647) and next prime (665492657).

It is a junction number, because it is equal to n+sod(n) for n = 665492598 and 665492607.

It is not an unprimeable number, because it can be changed into a prime (665492657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278902 + ... + 281277.

It is an arithmetic number, because the mean of its divisors is an integer number (39212600).

Almost surely, 2^665492652 is an apocalyptic number.

It is an amenable number.

665492652 is an abundant number, since it is smaller than the sum of its proper divisors (1216712148).

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

665492652 is a wasteful number, since it uses less digits than its factorization.

665492652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560203 (or 560195 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 665492652 is about 25797.1442605572. The cubic root of 665492652 is about 873.0673652861.

The spelling of 665492652 in words is "six hundred sixty-five million, four hundred ninety-two thousand, six hundred fifty-two".