665152105 has 8 divisors (see below), whose sum is σ = 798812352. Its totient is φ = 531701808.

The previous prime is 665152087. The next prime is 665152109. The reversal of 665152105 is 501251566.

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 665152105 - 2⁵ = 665152073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665152109) 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, 45429 + ... + 58258.

It is an arithmetic number, because the mean of its divisors is an integer number (99851544).

Almost surely, 2^665152105 is an apocalyptic number.

It is an amenable number.

665152105 is a deficient number, since it is larger than the sum of its proper divisors (133660247).

665152105 is a wasteful number, since it uses less digits than its factorization.

665152105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104975.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 665152105 is about 25790.5429372861. The cubic root of 665152105 is about 872.9184173848.

The spelling of 665152105 in words is "six hundred sixty-five million, one hundred fifty-two thousand, one hundred five".