1679297705 has 16 divisors (see below), whose sum is σ = 2064173760. Its totient is φ = 1310826048.

The previous prime is 1679297701. The next prime is 1679297743. The reversal of 1679297705 is 5077929761.

It is a cyclic number.

It is not a de Polignac number, because 1679297705 - 2² = 1679297701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1679297701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234914 + ... + 241956.

It is an arithmetic number, because the mean of its divisors is an integer number (129010860).

Almost surely, 2^1679297705 is an apocalyptic number.

It is an amenable number.

1679297705 is a deficient number, since it is larger than the sum of its proper divisors (384876055).

1679297705 is a wasteful number, since it uses less digits than its factorization.

1679297705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8200.

The product of its (nonzero) digits is 1666980, while the sum is 53.

The square root of 1679297705 is about 40979.2350465452. The cubic root of 1679297705 is about 1188.6187172003.

The spelling of 1679297705 in words is "one billion, six hundred seventy-nine million, two hundred ninety-seven thousand, seven hundred five".