665350955 has 8 divisors (see below), whose sum is σ = 799210800. Its totient is φ = 531754336.

The previous prime is 665350951. The next prime is 665350963. The reversal of 665350955 is 559053566.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 665350955 - 2² = 665350951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665350951) 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, 60200 + ... + 70389.

It is an arithmetic number, because the mean of its divisors is an integer number (99901350).

Almost surely, 2^665350955 is an apocalyptic number.

665350955 is a deficient number, since it is larger than the sum of its proper divisors (133859845).

665350955 is a wasteful number, since it uses less digits than its factorization.

665350955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131613.

The product of its (nonzero) digits is 607500, while the sum is 44.

The square root of 665350955 is about 25794.3977444716. The cubic root of 665350955 is about 873.0053962534.

The spelling of 665350955 in words is "six hundred sixty-five million, three hundred fifty thousand, nine hundred fifty-five".