1478861 has 2 divisors, whose sum is σ = 1478862. Its totient is φ = 1478860.

The previous prime is 1478857. The next prime is 1478863. The reversal of 1478861 is 1688741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 84100 = 1181^2 + 290^2 .

It is an emirp because it is prime and its reverse (1688741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1478861 - 2² = 1478857 is a prime.

Together with 1478863, 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 (1478863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739430 + 739431.

It is an arithmetic number, because the mean of its divisors is an integer number (739431).

2^1478861 is an apocalyptic number.

It is an amenable number.

1478861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478861 is an equidigital number, since it uses as much as digits as its factorization.

1478861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 35.

The square root of 1478861 is about 1216.0842898418. The cubic root of 1478861 is about 113.9311423714.

The spelling of 1478861 in words is "one million, four hundred seventy-eight thousand, eight hundred sixty-one".