Search a number
-
+
69474561 = 3131781399
BaseRepresentation
bin1000010010000…
…01100100000001
311211201200011220
410021001210001
5120241141221
610521025253
71502344512
oct411014401
9154650156
1069474561
11362422a2
121b325229
1311516610
149326a09
1561750c6
hex4241901

69474561 has 8 divisors (see below), whose sum is σ = 99758400. Its totient is φ = 42753552.

The previous prime is 69474533. The next prime is 69474571. The reversal of 69474561 is 16547496.

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

It is not a de Polignac number, because 69474561 - 214 = 69458177 is a prime.

It is a super-2 number, since 2×694745612 = 9653429252285442, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (69474521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890661 + ... + 890738.

It is an arithmetic number, because the mean of its divisors is an integer number (12469800).

Almost surely, 269474561 is an apocalyptic number.

It is an amenable number.

69474561 is a deficient number, since it is larger than the sum of its proper divisors (30283839).

69474561 is a wasteful number, since it uses less digits than its factorization.

69474561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781415.

The product of its digits is 181440, while the sum is 42.

The square root of 69474561 is about 8335.1401307956. The cubic root of 69474561 is about 411.0947561846.

The spelling of 69474561 in words is "sixty-nine million, four hundred seventy-four thousand, five hundred sixty-one".

Divisors: 1 3 13 39 1781399 5344197 23158187 69474561