7966940465 has 32 divisors (see below), whose sum is σ = 10910505600. Its totient is φ = 5531384320.

The previous prime is 7966940327. The next prime is 7966940477. The reversal of 7966940465 is 5640496697.

It is a happy number.

It is not a de Polignac number, because 7966940465 - 2¹⁰ = 7966939441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7966940465.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113894 + ... + 170016.

It is an arithmetic number, because the mean of its divisors is an integer number (340953300).

Almost surely, 2^7966940465 is an apocalyptic number.

It is an amenable number.

7966940465 is a deficient number, since it is larger than the sum of its proper divisors (2943565135).

7966940465 is a wasteful number, since it uses less digits than its factorization.

7966940465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56257.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The square root of 7966940465 is about 89257.7193580477. The cubic root of 7966940465 is about 1997.2412351078.

The spelling of 7966940465 in words is "seven billion, nine hundred sixty-six million, nine hundred forty thousand, four hundred sixty-five".