1679692727 has 4 divisors (see below), whose sum is σ = 1679821416. Its totient is φ = 1679564040.

The previous prime is 1679692709. The next prime is 1679692793. The reversal of 1679692727 is 7272969761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7272969761 = 211 ⋅34469051.

It is a cyclic number.

It is not a de Polignac number, because 1679692727 - 2¹² = 1679688631 is a prime.

It is a super-3 number, since 3×1679692727³ (a number of 29 digits) contains 333 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 (1679622727) 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, 42233 + ... + 71714.

It is an arithmetic number, because the mean of its divisors is an integer number (419955354).

Almost surely, 2^1679692727 is an apocalyptic number.

1679692727 is a deficient number, since it is larger than the sum of its proper divisors (128689).

1679692727 is a wasteful number, since it uses less digits than its factorization.

1679692727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128688.

The product of its digits is 4000752, while the sum is 56.

The square root of 1679692727 is about 40984.0545456401. The cubic root of 1679692727 is about 1188.7119096760.

The spelling of 1679692727 in words is "one billion, six hundred seventy-nine million, six hundred ninety-two thousand, seven hundred twenty-seven".