2145662 has 4 divisors (see below), whose sum is σ = 3218496. Its totient is φ = 1072830.

The previous prime is 2145643. The next prime is 2145677. The reversal of 2145662 is 2665412.

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

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 4³ + 5³ + 6⁵ + 6⁵ + 2²¹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536414 + ... + 536417.

It is an arithmetic number, because the mean of its divisors is an integer number (804624).

2^2145662 is an apocalyptic number.

2145662 is a deficient number, since it is larger than the sum of its proper divisors (1072834).

2145662 is a wasteful number, since it uses less digits than its factorization.

2145662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072833.

The product of its digits is 2880, while the sum is 26.

The square root of 2145662 is about 1464.8078372264. The cubic root of 2145662 is about 128.9794250382.

The spelling of 2145662 in words is "two million, one hundred forty-five thousand, six hundred sixty-two".