665522061467 has 8 divisors (see below), whose sum is σ = 679966249536. Its totient is φ = 651089712832.

The previous prime is 665522061443. The next prime is 665522061481. The reversal of 665522061467 is 764160225566.

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 665522061467 - 2¹² = 665522057371 is a prime.

It is a super-2 number, since 2×665522061467² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665522061427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846168 + ... + 3071109.

It is an arithmetic number, because the mean of its divisors is an integer number (84995781192).

Almost surely, 2^665522061467 is an apocalyptic number.

665522061467 is a deficient number, since it is larger than the sum of its proper divisors (14444188069).

665522061467 is a wasteful number, since it uses less digits than its factorization.

665522061467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919717.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 665522061467 in words is "six hundred sixty-five billion, five hundred twenty-two million, sixty-one thousand, four hundred sixty-seven".