720001006 has 8 divisors (see below), whose sum is σ = 1080819360. Its totient is φ = 359727888.

The previous prime is 720000979. The next prime is 720001043. The reversal of 720001006 is 600100027.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132991 + ... + 138298.

It is an arithmetic number, because the mean of its divisors is an integer number (135102420).

Almost surely, 2^720001006 is an apocalyptic number.

720001006 is a deficient number, since it is larger than the sum of its proper divisors (360818354).

720001006 is a wasteful number, since it uses less digits than its factorization.

720001006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272618.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 720001006 is about 26832.8344756941. The cubic root of 720001006 is about 896.2813667458.

The spelling of 720001006 in words is "seven hundred twenty million, one thousand, six".