90070689 has 8 divisors (see below), whose sum is σ = 121283712. Its totient is φ = 59452400.

The previous prime is 90070657. The next prime is 90070699. The reversal of 90070689 is 98607009.

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

It is a cyclic number.

It is not a de Polignac number, because 90070689 - 2⁵ = 90070657 is a prime.

It is a super-2 number, since 2×90070689² = 16225458033869442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90070609) 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, 148329 + ... + 148934.

It is an arithmetic number, because the mean of its divisors is an integer number (15160464).

Almost surely, 2^90070689 is an apocalyptic number.

It is an amenable number.

90070689 is a deficient number, since it is larger than the sum of its proper divisors (31213023).

90070689 is a wasteful number, since it uses less digits than its factorization.

90070689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297367.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 90070689 is about 9490.5578866577. The cubic root of 90070689 is about 448.2577721069.

The spelling of 90070689 in words is "ninety million, seventy thousand, six hundred eighty-nine".