7656670749 has 128 divisors (see below), whose sum is σ = 14461009920. Its totient is φ = 3483648000.

The previous prime is 7656670709. The next prime is 7656670781. The reversal of 7656670749 is 9470766567.

It is not a de Polignac number, because 7656670749 - 2⁷ = 7656670621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7656670709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2732149 + ... + 2734949.

It is an arithmetic number, because the mean of its divisors is an integer number (112976640).

Almost surely, 2^7656670749 is an apocalyptic number.

It is an amenable number.

7656670749 is a deficient number, since it is larger than the sum of its proper divisors (6804339171).

7656670749 is a wasteful number, since it uses less digits than its factorization.

7656670749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891.

The product of its (nonzero) digits is 13335840, while the sum is 57.

The square root of 7656670749 is about 87502.4042469691. The cubic root of 7656670749 is about 1970.9698943183.

The spelling of 7656670749 in words is "seven billion, six hundred fifty-six million, six hundred seventy thousand, seven hundred forty-nine".