218697054 has 16 divisors (see below), whose sum is σ = 447566592. Its totient is φ = 71203608.

The previous prime is 218697029. The next prime is 218697067. The reversal of 218697054 is 450796812.

It is a junction number, because it is equal to n+sod(n) for n = 218696997 and 218697015.

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 in 7 ways as a sum of consecutive naturals, for example, 423574 + ... + 424089.

It is an arithmetic number, because the mean of its divisors is an integer number (27972912).

Almost surely, 2^218697054 is an apocalyptic number.

218697054 is an abundant number, since it is smaller than the sum of its proper divisors (228869538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218697054 is a wasteful number, since it uses less digits than its factorization.

218697054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847711.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 218697054 is about 14788.4094479427. The cubic root of 218697054 is about 602.4869497813.

The spelling of 218697054 in words is "two hundred eighteen million, six hundred ninety-seven thousand, fifty-four".