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90068011 = 118188001
BaseRepresentation
bin1010101111001…
…01010000101011
320021110221002021
411113211100223
5141024134021
612534245311
72142364645
oct527452053
9207427067
1090068011
1146928480
12261b6837
1315876ba7
14bd67895
157d91c41
hex55e542b

90068011 has 4 divisors (see below), whose sum is σ = 98256024. Its totient is φ = 81880000.

The previous prime is 90068009. The next prime is 90068029. The reversal of 90068011 is 11086009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11086009 = 111007819.

It is a cyclic number.

It is not a de Polignac number, because 90068011 - 21 = 90068009 is a prime.

It is a super-2 number, since 2×900680112 = 16224493210992242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90068081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4093990 + ... + 4094011.

It is an arithmetic number, because the mean of its divisors is an integer number (24564006).

Almost surely, 290068011 is an apocalyptic number.

90068011 is a deficient number, since it is larger than the sum of its proper divisors (8188013).

90068011 is a wasteful number, since it uses less digits than its factorization.

90068011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8188012.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 90068011 is about 9490.4167980126. The cubic root of 90068011 is about 448.2533294992.

The spelling of 90068011 in words is "ninety million, sixty-eight thousand, eleven".

Divisors: 1 11 8188001 90068011