866219054 has 32 divisors (see below), whose sum is σ = 1470643776. Its totient is φ = 380385280.

The previous prime is 866219033. The next prime is 866219087. The reversal of 866219054 is 450912668.

It is a happy number.

866219054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18554 + ... + 45570.

It is an arithmetic number, because the mean of its divisors is an integer number (45957618).

Almost surely, 2^866219054 is an apocalyptic number.

866219054 is a deficient number, since it is larger than the sum of its proper divisors (604424722).

866219054 is a wasteful number, since it uses less digits than its factorization.

866219054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27100.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 866219054 is about 29431.5995827614. The cubic root of 866219054 is about 953.2553342491.

The spelling of 866219054 in words is "eight hundred sixty-six million, two hundred nineteen thousand, fifty-four".