2640898 has 8 divisors (see below), whose sum is σ = 4266108. Its totient is φ = 1218864.

The previous prime is 2640893. The next prime is 2640901. The reversal of 2640898 is 8980462.

It can be written as a sum of positive squares in 2 ways, for example, as 2569609 + 71289 = 1603^2 + 267^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2640893) 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, 50761 + ... + 50812.

2^2640898 is an apocalyptic number.

2640898 is a deficient number, since it is larger than the sum of its proper divisors (1625210).

2640898 is a wasteful number, since it uses less digits than its factorization.

2640898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101588.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 2640898 is about 1625.0839978290. The cubic root of 2640898 is about 138.2241334300.

The spelling of 2640898 in words is "two million, six hundred forty thousand, eight hundred ninety-eight".