2493658 has 4 divisors (see below), whose sum is σ = 3740490. Its totient is φ = 1246828.

The previous prime is 2493653. The next prime is 2493707. The reversal of 2493658 is 8563942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8563942 = 2 ⋅4281971.

It can be written as a sum of positive squares in only one way, i.e., 1896129 + 597529 = 1377^2 + 773^2 .

It is not an unprimeable number, because it can be changed into a prime (2493653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623413 + ... + 623416.

2^2493658 is an apocalyptic number.

2493658 is a deficient number, since it is larger than the sum of its proper divisors (1246832).

2493658 is a wasteful number, since it uses less digits than its factorization.

2493658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246831.

The product of its digits is 51840, while the sum is 37.

The square root of 2493658 is about 1579.1320400777. The cubic root of 2493658 is about 135.6060180701.

The spelling of 2493658 in words is "two million, four hundred ninety-three thousand, six hundred fifty-eight".