2698671686 has 4 divisors (see below), whose sum is σ = 4048007532. Its totient is φ = 1349335842.

The previous prime is 2698671683. The next prime is 2698671691. The reversal of 2698671686 is 6861768962.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2698671683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674667920 + ... + 674667923.

It is an arithmetic number, because the mean of its divisors is an integer number (1012001883).

Almost surely, 2^2698671686 is an apocalyptic number.

2698671686 is a deficient number, since it is larger than the sum of its proper divisors (1349335846).

2698671686 is a wasteful number, since it uses less digits than its factorization.

2698671686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349335845.

The product of its digits is 10450944, while the sum is 59.

The square root of 2698671686 is about 51948.7409472068. The cubic root of 2698671686 is about 1392.2482612401.

The spelling of 2698671686 in words is "two billion, six hundred ninety-eight million, six hundred seventy-one thousand, six hundred eighty-six".