1864601 has 2 divisors, whose sum is σ = 1864602. Its totient is φ = 1864600.

The previous prime is 1864591. The next prime is 1864649. The reversal of 1864601 is 1064681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952576 + 912025 = 976^2 + 955^2 .

It is an emirp because it is prime and its reverse (1064681) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1864601 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1864661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932300 + 932301.

It is an arithmetic number, because the mean of its divisors is an integer number (932301).

2^1864601 is an apocalyptic number.

It is an amenable number.

1864601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864601 is an equidigital number, since it uses as much as digits as its factorization.

1864601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1864601 is about 1365.5039362814. The cubic root of 1864601 is about 123.0822152873.

The spelling of 1864601 in words is "one million, eight hundred sixty-four thousand, six hundred one".