665113142 has 4 divisors (see below), whose sum is σ = 997669716. Its totient is φ = 332556570.

The previous prime is 665113079. The next prime is 665113157. The reversal of 665113142 is 241311566.

It is a happy number.

665113142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×665113142² = 884750983322224328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166278284 + ... + 166278287.

It is an arithmetic number, because the mean of its divisors is an integer number (249417429).

Almost surely, 2^665113142 is an apocalyptic number.

665113142 is a deficient number, since it is larger than the sum of its proper divisors (332556574).

665113142 is a wasteful number, since it uses less digits than its factorization.

665113142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332556573.

The product of its digits is 4320, while the sum is 29.

The square root of 665113142 is about 25789.7875524402. The cubic root of 665113142 is about 872.9013725695.

The spelling of 665113142 in words is "six hundred sixty-five million, one hundred thirteen thousand, one hundred forty-two".