216550654 has 4 divisors (see below), whose sum is σ = 324825984. Its totient is φ = 108275326.

The previous prime is 216550651. The next prime is 216550669. The reversal of 216550654 is 456055612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216550651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54137662 + ... + 54137665.

It is an arithmetic number, because the mean of its divisors is an integer number (81206496).

Almost surely, 2^216550654 is an apocalyptic number.

216550654 is a deficient number, since it is larger than the sum of its proper divisors (108275330).

216550654 is a wasteful number, since it uses less digits than its factorization.

216550654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108275329.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 216550654 is about 14715.6601618820. The cubic root of 216550654 is about 600.5094321572.

The spelling of 216550654 in words is "two hundred sixteen million, five hundred fifty thousand, six hundred fifty-four".