90066969 has 12 divisors (see below), whose sum is σ = 137749716. Its totient is φ = 56512512.

The previous prime is 90066967. The next prime is 90066971. The reversal of 90066969 is 96966009.

It is an interprime number because it is at equal distance from previous prime (90066967) and next prime (90066971).

It can be written as a sum of positive squares in 2 ways, for example, as 24651225 + 65415744 = 4965^2 + 8088^2 .

It is not a de Polignac number, because 90066969 - 2¹ = 90066967 is a prime.

It is a super-2 number, since 2×90066969² = 16224117809693922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90066967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294184 + ... + 294489.

It is an arithmetic number, because the mean of its divisors is an integer number (11479143).

Almost surely, 2^90066969 is an apocalyptic number.

It is an amenable number.

90066969 is a deficient number, since it is larger than the sum of its proper divisors (47682747).

90066969 is a wasteful number, since it uses less digits than its factorization.

90066969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588696 (or 588693 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 90066969 is about 9490.3619003703. The cubic root of 90066969 is about 448.2516008730.

The spelling of 90066969 in words is "ninety million, sixty-six thousand, nine hundred sixty-nine".