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6947961 = 36137967
BaseRepresentation
bin11010100000010001111001
3111001222210220
4122200101321
53234313321
6404530253
7113025306
oct32402171
914058726
106947961
113a16119
1223b0989
131593627
14ccc0ad
159239c6
hex6a0479

6947961 has 8 divisors (see below), whose sum is σ = 9416064. Its totient is φ = 4555920.

The previous prime is 6947959. The next prime is 6948041. The reversal of 6947961 is 1697496.

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

It is not a de Polignac number, because 6947961 - 21 = 6947959 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

6947961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6947911) 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, 18801 + ... + 19166.

It is an arithmetic number, because the mean of its divisors is an integer number (1177008).

Almost surely, 26947961 is an apocalyptic number.

6947961 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6947961 is a deficient number, since it is larger than the sum of its proper divisors (2468103).

6947961 is a wasteful number, since it uses less digits than its factorization.

6947961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38031.

The product of its digits is 81648, while the sum is 42.

The square root of 6947961 is about 2635.8985185322. The cubic root of 6947961 is about 190.8179052678.

The spelling of 6947961 in words is "six million, nine hundred forty-seven thousand, nine hundred sixty-one".

Divisors: 1 3 61 183 37967 113901 2315987 6947961