Search a number
-
+
88667081 = 616314387
BaseRepresentation
bin1010100100011…
…11001111001001
320011211202100222
411102033033021
5140144321311
612444235425
72124441416
oct522171711
9204752328
1088667081
1146060988
122583bb75
13154a6339
14bac110d
157bb6adb
hex548f3c9

88667081 has 4 divisors (see below), whose sum is σ = 88687632. Its totient is φ = 88646532.

The previous prime is 88667057. The next prime is 88667107. The reversal of 88667081 is 18076688.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88667081 - 210 = 88666057 is a prime.

It is a super-2 number, since 2×886670812 = 15723702506121122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88667011) 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, 1031 + ... + 13356.

It is an arithmetic number, because the mean of its divisors is an integer number (22171908).

Almost surely, 288667081 is an apocalyptic number.

It is an amenable number.

88667081 is a deficient number, since it is larger than the sum of its proper divisors (20551).

88667081 is a wasteful number, since it uses less digits than its factorization.

88667081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20550.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 88667081 is about 9416.3199287195. The cubic root of 88667081 is about 445.9171104178.

The spelling of 88667081 in words is "eighty-eight million, six hundred sixty-seven thousand, eighty-one".

Divisors: 1 6163 14387 88667081