70090 has 16 divisors (see below), whose sum is σ = 129888. Its totient is φ = 27216.

The previous prime is 70079. The next prime is 70099. The reversal of 70090 is 9007.

It is a happy number.

70090 is a modest number, since divided by 90 gives 70 as remainder.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (70099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349 + ... + 511.

It is an arithmetic number, because the mean of its divisors is an integer number (8118).

2⁷⁰⁰⁹⁰ is an apocalyptic number.

70090 is a deficient number, since it is larger than the sum of its proper divisors (59798).

70090 is a wasteful number, since it uses less digits than its factorization.

70090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213.

The product of its (nonzero) digits is 63, while the sum is 16.

The square root of 70090 is about 264.7451604846. The cubic root of 70090 is about 41.2305080851.

Adding to 70090 its reverse (9007), we get a palindrome (79097).

The spelling of 70090 in words is "seventy thousand, ninety".