7640772447 has 16 divisors (see below), whose sum is σ = 12701544192. Its totient is φ = 3969232320.

The previous prime is 7640772427. The next prime is 7640772449. The reversal of 7640772447 is 7442770467.

It is not a de Polignac number, because 7640772447 - 2²⁴ = 7623995231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7640772396 and 7640772405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640772449) 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 15 ways as a sum of consecutive naturals, for example, 16538238 + ... + 16538699.

It is an arithmetic number, because the mean of its divisors is an integer number (793846512).

Almost surely, 2^7640772447 is an apocalyptic number.

7640772447 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

7640772447 is a deficient number, since it is larger than the sum of its proper divisors (5060771745).

7640772447 is a wasteful number, since it uses less digits than its factorization.

7640772447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33076958.

The product of its (nonzero) digits is 1843968, while the sum is 48.

The square root of 7640772447 is about 87411.5120965196. The cubic root of 7640772447 is about 1969.6047758602.

It can be divided in two parts, 7640 and 772447, that added together give a palindrome (780087).

The spelling of 7640772447 in words is "seven billion, six hundred forty million, seven hundred seventy-two thousand, four hundred forty-seven".