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7040641 = 8384827
BaseRepresentation
bin11010110110111010000001
3111020200221111
4122312322001
53300300031
6410523321
7113562436
oct32667201
914220844
107040641
113a79813
122436541
1315c687a
14d13b8d
159411b1
hex6b6e81

7040641 has 4 divisors (see below), whose sum is σ = 7125552. Its totient is φ = 6955732.

The previous prime is 7040639. The next prime is 7040651. The reversal of 7040641 is 1460407.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1460407 = 13112339.

It is not a de Polignac number, because 7040641 - 21 = 7040639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7040651) 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, 42331 + ... + 42496.

It is an arithmetic number, because the mean of its divisors is an integer number (1781388).

Almost surely, 27040641 is an apocalyptic number.

It is an amenable number.

7040641 is a deficient number, since it is larger than the sum of its proper divisors (84911).

7040641 is an equidigital number, since it uses as much as digits as its factorization.

7040641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84910.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7040641 is about 2653.4206225173. The cubic root of 7040641 is about 191.6626109623.

The spelling of 7040641 in words is "seven million, forty thousand, six hundred forty-one".

Divisors: 1 83 84827 7040641