7705679905 has 24 divisors (see below), whose sum is σ = 11615841216. Its totient is φ = 4803538080.

The previous prime is 7705679887. The next prime is 7705679923. The reversal of 7705679905 is 5099765077.

It is an interprime number because it is at equal distance from previous prime (7705679887) and next prime (7705679923).

It is a de Polignac number, because none of the positive numbers 2^k-7705679905 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 905527 + ... + 913996.

It is an arithmetic number, because the mean of its divisors is an integer number (483993384).

Almost surely, 2^7705679905 is an apocalyptic number.

It is an amenable number.

7705679905 is a deficient number, since it is larger than the sum of its proper divisors (3910161311).

7705679905 is a wasteful number, since it uses less digits than its factorization.

7705679905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819557 (or 1819546 counting only the distinct ones).

The product of its (nonzero) digits is 4167450, while the sum is 55.

The square root of 7705679905 is about 87782.0021701488. The cubic root of 7705679905 is about 1975.1662439776.

The spelling of 7705679905 in words is "seven billion, seven hundred five million, six hundred seventy-nine thousand, nine hundred five".