90650069 has 8 divisors (see below), whose sum is σ = 96833880. Its totient is φ = 84560896.

The previous prime is 90650059. The next prime is 90650093. The reversal of 90650069 is 96005609.

It can be written as a sum of positive squares in 4 ways, for example, as 25654225 + 64995844 = 5065^2 + 8062^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90650069 is a prime.

It is a super-2 number, since 2×90650069² = 16434870019409522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90650029) 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, 21674 + ... + 25515.

It is an arithmetic number, because the mean of its divisors is an integer number (12104235).

Almost surely, 2^90650069 is an apocalyptic number.

It is an amenable number.

90650069 is a deficient number, since it is larger than the sum of its proper divisors (6183811).

90650069 is a wasteful number, since it uses less digits than its factorization.

90650069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47319.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 90650069 is about 9521.0329796719. The cubic root of 90650069 is about 449.2168584541.

The spelling of 90650069 in words is "ninety million, six hundred fifty thousand, sixty-nine".