70490 has 32 divisors (see below), whose sum is σ = 155520. Its totient is φ = 22464.

The previous prime is 70489. The next prime is 70501. The reversal of 70490 is 9407.

It is a plaindrome in base 16.

It is a zygodrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1304 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (4860).

2⁷⁰⁴⁹⁰ is an apocalyptic number.

70490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a pronic number, being equal to 265×266.

70490 is an abundant number, since it is smaller than the sum of its proper divisors (85030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77760).

70490 is a wasteful number, since it uses less digits than its factorization.

70490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 70490 is about 265.4995291898. The cubic root of 70490 is about 41.3087928092.

Adding to 70490 its reverse (9407), we get a palindrome (79897).

The spelling of 70490 in words is "seventy thousand, four hundred ninety".