2158612 has 6 divisors (see below), whose sum is σ = 3777578. Its totient is φ = 1079304.

The previous prime is 2158603. The next prime is 2158621. The reversal of 2158612 is 2168512.

It is an interprime number because it is at equal distance from previous prime (2158603) and next prime (2158621).

It can be written as a sum of positive squares in only one way, i.e., 1860496 + 298116 = 1364^2 + 546^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269823 + ... + 269830.

2^2158612 is an apocalyptic number.

It is an amenable number.

2158612 is a deficient number, since it is larger than the sum of its proper divisors (1618966).

2158612 is a wasteful number, since it uses less digits than its factorization.

2158612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539657 (or 539655 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 2158612 is about 1469.2215625970. The cubic root of 2158612 is about 129.2383869935.

The spelling of 2158612 in words is "two million, one hundred fifty-eight thousand, six hundred twelve".