665245034 has 4 divisors (see below), whose sum is σ = 997867554. Its totient is φ = 332622516.

The previous prime is 665245033. The next prime is 665245039. The reversal of 665245034 is 430542566.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 657666025 + 7579009 = 25645^2 + 2753^2 .

It is a super-2 number, since 2×665245034² = 885101910523322312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665244985 and 665245003.

It is not an unprimeable number, because it can be changed into a prime (665245033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166311257 + ... + 166311260.

Almost surely, 2^665245034 is an apocalyptic number.

665245034 is a deficient number, since it is larger than the sum of its proper divisors (332622520).

665245034 is a wasteful number, since it uses less digits than its factorization.

665245034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332622519.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 665245034 is about 25792.3444843620. The cubic root of 665245034 is about 872.9590675647.

The spelling of 665245034 in words is "six hundred sixty-five million, two hundred forty-five thousand, thirty-four".