220664954 has 4 divisors (see below), whose sum is σ = 330997434. Its totient is φ = 110332476.

The previous prime is 220664903. The next prime is 220664957. The reversal of 220664954 is 459466022.

220664954 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 459466022 = 2 ⋅229733011.

It can be written as a sum of positive squares in only one way, i.e., 215943025 + 4721929 = 14695^2 + 2173^2 .

It is not an unprimeable number, because it can be changed into a prime (220664957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55166237 + ... + 55166240.

Almost surely, 2^220664954 is an apocalyptic number.

220664954 is a deficient number, since it is larger than the sum of its proper divisors (110332480).

220664954 is a wasteful number, since it uses less digits than its factorization.

220664954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110332479.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 220664954 is about 14854.7956566221. The cubic root of 220664954 is about 604.2886742694.

The spelling of 220664954 in words is "two hundred twenty million, six hundred sixty-four thousand, nine hundred fifty-four".