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3420647 is a prime number
BaseRepresentation
bin1101000011000111100111
320102210020122
431003013213
51333430042
6201152155
741034506
oct15030747
96383218
103420647
111a26a8a
12118b65b
13929c69
1465083d
154787d2
hex3431e7

3420647 has 2 divisors, whose sum is σ = 3420648. Its totient is φ = 3420646.

The previous prime is 3420631. The next prime is 3420649. The reversal of 3420647 is 7460243.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3420647 - 24 = 3420631 is a prime.

Together with 3420649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3420649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710323 + 1710324.

It is an arithmetic number, because the mean of its divisors is an integer number (1710324).

Almost surely, 23420647 is an apocalyptic number.

3420647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3420647 is an equidigital number, since it uses as much as digits as its factorization.

3420647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 3420647 is about 1849.4991213839. The cubic root of 3420647 is about 150.6732257784.

The spelling of 3420647 in words is "three million, four hundred twenty thousand, six hundred forty-seven".