2640698 has 8 divisors (see below), whose sum is σ = 3991680. Its totient is φ = 1310140.

The previous prime is 2640689. The next prime is 2640707. The reversal of 2640698 is 8960462.

It is an interprime number because it is at equal distance from previous prime (2640689) and next prime (2640707).

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

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4778 + ... + 5301.

It is an arithmetic number, because the mean of its divisors is an integer number (498960).

2^2640698 is an apocalyptic number.

2640698 is a deficient number, since it is larger than the sum of its proper divisors (1350982).

2640698 is a wasteful number, since it uses less digits than its factorization.

2640698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2640698 is about 1625.0224613832. The cubic root of 2640698 is about 138.2206440204.

The spelling of 2640698 in words is "two million, six hundred forty thousand, six hundred ninety-eight".