222861815 has 16 divisors (see below), whose sum is σ = 292584960. Its totient is φ = 161615520.

The previous prime is 222861797. The next prime is 222861869. The reversal of 222861815 is 518168222.

It is a happy number.

It is not a de Polignac number, because 222861815 - 2¹⁶ = 222796279 is a prime.

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, 14102 + ... + 25388.

It is an arithmetic number, because the mean of its divisors is an integer number (18286560).

Almost surely, 2^222861815 is an apocalyptic number.

222861815 is a deficient number, since it is larger than the sum of its proper divisors (69723145).

222861815 is a wasteful number, since it uses less digits than its factorization.

222861815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11662.

The product of its digits is 15360, while the sum is 35.

The square root of 222861815 is about 14928.5570300682. The cubic root of 222861815 is about 606.2874162616.

The spelling of 222861815 in words is "two hundred twenty-two million, eight hundred sixty-one thousand, eight hundred fifteen".