1679247077 has 4 divisors (see below), whose sum is σ = 1686454380. Its totient is φ = 1672039776.

The previous prime is 1679247047. The next prime is 1679247079. The reversal of 1679247077 is 7707429761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 675688036 + 1003559041 = 25994^2 + 31679^2 .

It is a cyclic number.

It is not a de Polignac number, because 1679247077 - 2⁶ = 1679247013 is a prime.

It is a super-2 number, since 2×1679247077² = 5639741491226087858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679247079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3603302 + ... + 3603767.

It is an arithmetic number, because the mean of its divisors is an integer number (421613595).

Almost surely, 2^1679247077 is an apocalyptic number.

It is an amenable number.

1679247077 is a deficient number, since it is larger than the sum of its proper divisors (7207303).

1679247077 is an equidigital number, since it uses as much as digits as its factorization.

1679247077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207302.

The product of its (nonzero) digits is 1037232, while the sum is 50.

The square root of 1679247077 is about 40978.6173143995. The cubic root of 1679247077 is about 1188.6067721288.

The spelling of 1679247077 in words is "one billion, six hundred seventy-nine million, two hundred forty-seven thousand, seventy-seven".