70005999 has 8 divisors (see below), whose sum is σ = 106675840. Its totient is φ = 40003416.

The previous prime is 70005989. The next prime is 70006003. The reversal of 70005999 is 99950007.

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

It is not a de Polignac number, because 70005999 - 2⁹ = 70005487 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 (70005989) 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, 1666789 + ... + 1666830.

It is an arithmetic number, because the mean of its divisors is an integer number (13334480).

Almost surely, 2^70005999 is an apocalyptic number.

70005999 is a deficient number, since it is larger than the sum of its proper divisors (36669841).

70005999 is a wasteful number, since it uses less digits than its factorization.

70005999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333629.

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 70005999 is about 8366.9587664814. The cubic root of 70005999 is about 412.1403027829.

The spelling of 70005999 in words is "seventy million, five thousand, nine hundred ninety-nine".