2641858 has 4 divisors (see below), whose sum is σ = 3962790. Its totient is φ = 1320928.

The previous prime is 2641841. The next prime is 2641879. The reversal of 2641858 is 8581462.

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

It can be written as a sum of positive squares in only one way, i.e., 1447209 + 1194649 = 1203^2 + 1093^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660463 + ... + 660466.

2^2641858 is an apocalyptic number.

2641858 is a deficient number, since it is larger than the sum of its proper divisors (1320932).

2641858 is a wasteful number, since it uses less digits than its factorization.

2641858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320931.

The product of its digits is 15360, while the sum is 34.

The square root of 2641858 is about 1625.3793403387. The cubic root of 2641858 is about 138.2408801442.

The spelling of 2641858 in words is "two million, six hundred forty-one thousand, eight hundred fifty-eight".