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12573661 is a prime number
BaseRepresentation
bin101111111101…
…101111011101
3212122210211011
4233331233131
511204324121
61125255221
7211605622
oct57755735
925583734
1012573661
117108861
124264511
1327b3149
141954349
1511857e1
hexbfdbdd

12573661 has 2 divisors, whose sum is σ = 12573662. Its totient is φ = 12573660.

The previous prime is 12573643. The next prime is 12573679. The reversal of 12573661 is 16637521.

It is a balanced prime because it is at equal distance from previous prime (12573643) and next prime (12573679).

It can be written as a sum of positive squares in only one way, i.e., 10278436 + 2295225 = 3206^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 12573661 - 25 = 12573629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12573601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6286830 + 6286831.

It is an arithmetic number, because the mean of its divisors is an integer number (6286831).

Almost surely, 212573661 is an apocalyptic number.

It is an amenable number.

12573661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12573661 is an equidigital number, since it uses as much as digits as its factorization.

12573661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 12573661 is about 3545.9358426232. The cubic root of 12573661 is about 232.5344212343.

The spelling of 12573661 in words is "twelve million, five hundred seventy-three thousand, six hundred sixty-one".