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2081687 is a prime number
BaseRepresentation
bin111111100001110010111
310220202112112
413330032113
51013103222
6112341235
723460026
oct7741627
93822475
102081687
1111a2003
1284481b
1357b68a
143c28bd
152b1be2
hex1fc397

2081687 has 2 divisors, whose sum is σ = 2081688. Its totient is φ = 2081686.

The previous prime is 2081671. The next prime is 2081719. The reversal of 2081687 is 7861802.

It is an a-pointer prime, because the next prime (2081719) can be obtained adding 2081687 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2081687 - 24 = 2081671 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040843 + 1040844.

It is an arithmetic number, because the mean of its divisors is an integer number (1040844).

22081687 is an apocalyptic number.

2081687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081687 is an equidigital number, since it uses as much as digits as its factorization.

2081687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 2081687 is about 1442.8052536638. The cubic root of 2081687 is about 127.6845871794.

The spelling of 2081687 in words is "two million, eighty-one thousand, six hundred eighty-seven".