665343077 has 8 divisors (see below), whose sum is σ = 761097792. Its totient is φ = 569764800.

The previous prime is 665343073. The next prime is 665343113. The reversal of 665343077 is 770343566.

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 665343077 - 2² = 665343073 is a prime.

It is a super-2 number, since 2×665343077² = 885362820223655858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665343071) 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, 35924 + ... + 51197.

It is an arithmetic number, because the mean of its divisors is an integer number (95137224).

Almost surely, 2^665343077 is an apocalyptic number.

It is an amenable number.

665343077 is a deficient number, since it is larger than the sum of its proper divisors (95754715).

665343077 is a wasteful number, since it uses less digits than its factorization.

665343077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88219.

The product of its (nonzero) digits is 317520, while the sum is 41.

The square root of 665343077 is about 25794.2450364418. The cubic root of 665343077 is about 873.0019506715.

The spelling of 665343077 in words is "six hundred sixty-five million, three hundred forty-three thousand, seventy-seven".