665151151 has 8 divisors (see below), whose sum is σ = 761144960. Its totient is φ = 569400408.

The previous prime is 665151139. The next prime is 665151169. The reversal of 665151151 is 151151566.

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 665151151 - 2¹⁷ = 665020079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665151181) 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, 54861 + ... + 65878.

It is an arithmetic number, because the mean of its divisors is an integer number (95143120).

Almost surely, 2^665151151 is an apocalyptic number.

665151151 is a deficient number, since it is larger than the sum of its proper divisors (95993809).

665151151 is a wasteful number, since it uses less digits than its factorization.

665151151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121533.

The product of its digits is 4500, while the sum is 31.

The square root of 665151151 is about 25790.5244421280. The cubic root of 665151151 is about 872.9180000544.

The spelling of 665151151 in words is "six hundred sixty-five million, one hundred fifty-one thousand, one hundred fifty-one".