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1220077 is a prime number
BaseRepresentation
bin100101001110111101101
32021222122001
410221313231
5303020302
642052301
713241035
oct4516755
92258561
101220077
11763731
124aa091
13339451
1423a8c5
15191787
hex129ded

1220077 has 2 divisors, whose sum is σ = 1220078. Its totient is φ = 1220076.

The previous prime is 1220071. The next prime is 1220099. The reversal of 1220077 is 7700221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 98596 = 1059^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220077 - 27 = 1219949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610038 + 610039.

It is an arithmetic number, because the mean of its divisors is an integer number (610039).

21220077 is an apocalyptic number.

It is an amenable number.

1220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220077 is an equidigital number, since it uses as much as digits as its factorization.

1220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 1220077 is about 1104.5709574310. The cubic root of 1220077 is about 106.8552209673.

Adding to 1220077 its reverse (7700221), we get a palindrome (8920298).

The spelling of 1220077 in words is "one million, two hundred twenty thousand, seventy-seven".