662218049 has 4 divisors (see below), whose sum is σ = 662692800. Its totient is φ = 661743300.

The previous prime is 662218033. The next prime is 662218091. The reversal of 662218049 is 940812266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 662218049 - 2⁴ = 662218033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662218099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235277 + ... + 238074.

It is an arithmetic number, because the mean of its divisors is an integer number (165673200).

Almost surely, 2^662218049 is an apocalyptic number.

It is an amenable number.

662218049 is a deficient number, since it is larger than the sum of its proper divisors (474751).

662218049 is a wasteful number, since it uses less digits than its factorization.

662218049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474750.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 662218049 is about 25733.5976691950. The cubic root of 662218049 is about 871.6330138147.

The spelling of 662218049 in words is "six hundred sixty-two million, two hundred eighteen thousand, forty-nine".