706487221 has 16 divisors (see below), whose sum is σ = 788578560. Its totient is φ = 627425280.

The previous prime is 706487219. The next prime is 706487231. The reversal of 706487221 is 122784607.

It is a cyclic number.

It is not a de Polignac number, because 706487221 - 2¹ = 706487219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706487231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396685 + ... + 398461.

It is an arithmetic number, because the mean of its divisors is an integer number (49286160).

Almost surely, 2^706487221 is an apocalyptic number.

It is an amenable number.

706487221 is a deficient number, since it is larger than the sum of its proper divisors (82091339).

706487221 is a wasteful number, since it uses less digits than its factorization.

706487221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 706487221 is about 26579.8273320200. The cubic root of 706487221 is about 890.6384431351.

The spelling of 706487221 in words is "seven hundred six million, four hundred eighty-seven thousand, two hundred twenty-one".