662171421 has 8 divisors (see below), whose sum is σ = 883349280. Its totient is φ = 441220592.

The previous prime is 662171417. The next prime is 662171423. The reversal of 662171421 is 124171266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 662171421 - 2² = 662171417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662171423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49830 + ... + 61703.

It is an arithmetic number, because the mean of its divisors is an integer number (110418660).

Almost surely, 2^662171421 is an apocalyptic number.

It is an amenable number.

662171421 is a deficient number, since it is larger than the sum of its proper divisors (221177859).

662171421 is a wasteful number, since it uses less digits than its factorization.

662171421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113515.

The product of its digits is 4032, while the sum is 30.

The square root of 662171421 is about 25732.6916780969. The cubic root of 662171421 is about 871.6125555693.

The spelling of 662171421 in words is "six hundred sixty-two million, one hundred seventy-one thousand, four hundred twenty-one".