701667221 has 8 divisors (see below), whose sum is σ = 705585720. Its totient is φ = 697756608.

The previous prime is 701667217. The next prime is 701667229. The reversal of 701667221 is 122766107.

It can be written as a sum of positive squares in 4 ways, for example, as 352500625 + 349166596 = 18775^2 + 18686^2 .

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 701667221 - 2² = 701667217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701667229) 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, 282035 + ... + 284511.

It is an arithmetic number, because the mean of its divisors is an integer number (88198215).

Almost surely, 2^701667221 is an apocalyptic number.

It is an amenable number.

701667221 is a deficient number, since it is larger than the sum of its proper divisors (3918499).

701667221 is a wasteful number, since it uses less digits than its factorization.

701667221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 701667221 is about 26489.0018875759. The cubic root of 701667221 is about 888.6083629296.

The spelling of 701667221 in words is "seven hundred one million, six hundred sixty-seven thousand, two hundred twenty-one".