2097658 has 4 divisors (see below), whose sum is σ = 3146490. Its totient is φ = 1048828.

The previous prime is 2097653. The next prime is 2097671. The reversal of 2097658 is 8567902.

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., 1923769 + 173889 = 1387^2 + 417^2 .

It is not an unprimeable number, because it can be changed into a prime (2097653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524413 + ... + 524416.

2^2097658 is an apocalyptic number.

2097658 is a deficient number, since it is larger than the sum of its proper divisors (1048832).

2097658 is a wasteful number, since it uses less digits than its factorization.

2097658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048831.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2097658 is about 1448.3293824265. The cubic root of 2097658 is about 128.0102937685.

The spelling of 2097658 in words is "two million, ninety-seven thousand, six hundred fifty-eight".