220700764 has 6 divisors (see below), whose sum is σ = 386226344. Its totient is φ = 110350380.

The previous prime is 220700729. The next prime is 220700813. The reversal of 220700764 is 467007022.

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 as a sum of consecutive naturals, namely, 27587592 + ... + 27587599.

Almost surely, 2^220700764 is an apocalyptic number.

It is an amenable number.

220700764 is a deficient number, since it is larger than the sum of its proper divisors (165525580).

220700764 is a wasteful number, since it uses less digits than its factorization.

220700764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55175195 (or 55175193 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 220700764 is about 14856.0009423802. Note that the first 3 decimals coincide. The cubic root of 220700764 is about 604.3213609385.

Subtracting from 220700764 its sum of digits (28), we obtain a square (220700736 = 14856²).

Adding to 220700764 its reverse (467007022), we get a palindrome (687707786).

The spelling of 220700764 in words is "two hundred twenty million, seven hundred thousand, seven hundred sixty-four".