2156654 has 16 divisors (see below), whose sum is σ = 3457728. Its totient is φ = 1005312.

The previous prime is 2156647. The next prime is 2156659. The reversal of 2156654 is 4566512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4427 + ... + 4889.

It is an arithmetic number, because the mean of its divisors is an integer number (216108).

2^2156654 is an apocalyptic number.

2156654 is a deficient number, since it is larger than the sum of its proper divisors (1301074).

2156654 is a wasteful number, since it uses less digits than its factorization.

2156654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619.

The product of its digits is 7200, while the sum is 29.

The square root of 2156654 is about 1468.5550721713. Note that the first 3 decimals coincide. The cubic root of 2156654 is about 129.1992993281.

The spelling of 2156654 in words is "two million, one hundred fifty-six thousand, six hundred fifty-four".