90061670 has 16 divisors (see below), whose sum is σ = 162250560. Its totient is φ = 35993664.

The previous prime is 90061667. The next prime is 90061679. The reversal of 90061670 is 7616009.

It is a happy number.

It is a super-2 number, since 2×90061670² = 16222208806377800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90061679) 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, 11066 + ... + 17394.

It is an arithmetic number, because the mean of its divisors is an integer number (10140660).

Almost surely, 2^90061670 is an apocalyptic number.

90061670 is a deficient number, since it is larger than the sum of its proper divisors (72188890).

90061670 is a wasteful number, since it uses less digits than its factorization.

90061670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7759.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 90061670 is about 9490.0827182907. The cubic root of 90061670 is about 448.2428098891.

Adding to 90061670 its reverse (7616009), we get a palindrome (97677679).

The spelling of 90061670 in words is "ninety million, sixty-one thousand, six hundred seventy".