706444387 has 4 divisors (see below), whose sum is σ = 770666616. Its totient is φ = 642222160.

The previous prime is 706444381. The next prime is 706444423. The reversal of 706444387 is 783444607.

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 706444387 - 2⁷ = 706444259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706444381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32111098 + ... + 32111119.

It is an arithmetic number, because the mean of its divisors is an integer number (192666654).

Almost surely, 2^706444387 is an apocalyptic number.

706444387 is a deficient number, since it is larger than the sum of its proper divisors (64222229).

706444387 is a wasteful number, since it uses less digits than its factorization.

706444387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64222228.

The product of its (nonzero) digits is 451584, while the sum is 43.

The square root of 706444387 is about 26579.0215583644. The cubic root of 706444387 is about 890.6204431030.

The spelling of 706444387 in words is "seven hundred six million, four hundred forty-four thousand, three hundred eighty-seven".