70399 has 8 divisors (see below), whose sum is σ = 82080. Its totient is φ = 59136.

The previous prime is 70393. The next prime is 70423. The reversal of 70399 is 99307.

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

It is not a de Polignac number, because 70399 - 2⁷ = 70271 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567 + ... + 679.

It is an arithmetic number, because the mean of its divisors is an integer number (10260).

2⁷⁰³⁹⁹ is an apocalyptic number.

70399 is a deficient number, since it is larger than the sum of its proper divisors (11681).

70399 is a wasteful number, since it uses less digits than its factorization.

70399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 70399 is about 265.3280987758. The cubic root of 70399 is about 41.2910091097.

The spelling of 70399 in words is "seventy thousand, three hundred ninety-nine".