2666698 has 8 divisors (see below), whose sum is σ = 4006980. Its totient is φ = 1331040.

The previous prime is 2666693. The next prime is 2666717. The reversal of 2666698 is 8966662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2666689 + 9 = 1633^2 + 3^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2666698² = 14222556446408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666693) 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, 1668 + ... + 2848.

2^2666698 is an apocalyptic number.

2666698 is a deficient number, since it is larger than the sum of its proper divisors (1340282).

2666698 is a wasteful number, since it uses less digits than its factorization.

2666698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312.

The product of its digits is 186624, while the sum is 43.

The square root of 2666698 is about 1633.0027556621. The cubic root of 2666698 is about 138.6727980010.

It can be divided in two parts, 2666 and 698, that added together give a square (3364 = 58²).

The spelling of 2666698 in words is "two million, six hundred sixty-six thousand, six hundred ninety-eight".