706443621 has 8 divisors (see below), whose sum is σ = 1014380640. Its totient is φ = 434734512.

The previous prime is 706443607. The next prime is 706443631. The reversal of 706443621 is 126344607.

It is a happy number.

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

It is not a de Polignac number, because 706443621 - 2⁵ = 706443589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706443631) 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, 9056931 + ... + 9057008.

It is an arithmetic number, because the mean of its divisors is an integer number (126797580).

Almost surely, 2^706443621 is an apocalyptic number.

It is an amenable number.

706443621 is a deficient number, since it is larger than the sum of its proper divisors (307937019).

706443621 is a wasteful number, since it uses less digits than its factorization.

706443621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18113955.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 706443621 is about 26579.0071484997. The cubic root of 706443621 is about 890.6201212020.

The spelling of 706443621 in words is "seven hundred six million, four hundred forty-three thousand, six hundred twenty-one".