662725667 has 4 divisors (see below), whose sum is σ = 663153960. Its totient is φ = 662297376.

The previous prime is 662725649. The next prime is 662725669. The reversal of 662725667 is 766527266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 662725667 - 2²⁰ = 661677091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662725669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211817 + ... + 214922.

It is an arithmetic number, because the mean of its divisors is an integer number (165788490).

Almost surely, 2^662725667 is an apocalyptic number.

662725667 is a deficient number, since it is larger than the sum of its proper divisors (428293).

662725667 is a wasteful number, since it uses less digits than its factorization.

662725667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428292.

The product of its digits is 1270080, while the sum is 47.

The square root of 662725667 is about 25743.4587225571. The cubic root of 662725667 is about 871.8556713931.

The spelling of 662725667 in words is "six hundred sixty-two million, seven hundred twenty-five thousand, six hundred sixty-seven".