665707629049 has 8 divisors (see below), whose sum is σ = 704935739808. Its totient is φ = 626487167040.

The previous prime is 665707629047. The next prime is 665707629073. The reversal of 665707629049 is 940926707566.

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 665707629049 - 2¹ = 665707629047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665707629043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732507 + ... + 2081584.

It is an arithmetic number, because the mean of its divisors is an integer number (88116967476).

Almost surely, 2^665707629049 is an apocalyptic number.

It is an amenable number.

665707629049 is a deficient number, since it is larger than the sum of its proper divisors (39228110759).

665707629049 is a wasteful number, since it uses less digits than its factorization.

665707629049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824375.

The product of its (nonzero) digits is 34292160, while the sum is 61.

The spelling of 665707629049 in words is "six hundred sixty-five billion, seven hundred seven million, six hundred twenty-nine thousand, forty-nine".