70390 has 8 divisors (see below), whose sum is σ = 126720. Its totient is φ = 28152.

The previous prime is 70381. The next prime is 70393. The reversal of 70390 is 9307.

It is a happy number.

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

It is a plaindrome in base 12.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3510 + ... + 3529.

It is an arithmetic number, because the mean of its divisors is an integer number (15840).

2⁷⁰³⁹⁰ is an apocalyptic number.

70390 is a deficient number, since it is larger than the sum of its proper divisors (56330).

70390 is a wasteful number, since it uses less digits than its factorization.

70390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7046.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 70390 is about 265.3111381002. The cubic root of 70390 is about 41.2892494497.

Adding to 70390 its reverse (9307), we get a palindrome (79697).

The spelling of 70390 in words is "seventy thousand, three hundred ninety".