2154706 has 4 divisors (see below), whose sum is σ = 3232062. Its totient is φ = 1077352.

The previous prime is 2154683. The next prime is 2154707. The reversal of 2154706 is 6074512.

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., 2059225 + 95481 = 1435^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (2154707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538675 + ... + 538678.

2^2154706 is an apocalyptic number.

2154706 is a deficient number, since it is larger than the sum of its proper divisors (1077356).

2154706 is a wasteful number, since it uses less digits than its factorization.

2154706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077355.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2154706 is about 1467.8916853774. The cubic root of 2154706 is about 129.1603878090.

The spelling of 2154706 in words is "two million, one hundred fifty-four thousand, seven hundred six".