213220678 has 16 divisors (see below), whose sum is σ = 349634880. Its totient is φ = 96716200.

The previous prime is 213220669. The next prime is 213220691. The reversal of 213220678 is 876022312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933 + ... + 20671.

It is an arithmetic number, because the mean of its divisors is an integer number (21852180).

Almost surely, 2^213220678 is an apocalyptic number.

213220678 is a deficient number, since it is larger than the sum of its proper divisors (136414202).

213220678 is a wasteful number, since it uses less digits than its factorization.

213220678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20243.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 213220678 is about 14602.0778658381. The cubic root of 213220678 is about 597.4154364080.

The spelling of 213220678 in words is "two hundred thirteen million, two hundred twenty thousand, six hundred seventy-eight".