2470781 has 2 divisors, whose sum is σ = 2470782. Its totient is φ = 2470780.

The previous prime is 2470777. The next prime is 2470789. The reversal of 2470781 is 1870742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2374681 + 96100 = 1541^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 2470781 - 2² = 2470777 is a prime.

It is a super-2 number, since 2×2470781² = 12209517499922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2470789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1235390 + 1235391.

It is an arithmetic number, because the mean of its divisors is an integer number (1235391).

2^2470781 is an apocalyptic number.

It is an amenable number.

2470781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2470781 is an equidigital number, since it uses as much as digits as its factorization.

2470781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 2470781 is about 1571.8718141121. The cubic root of 2470781 is about 135.1900569523.

The spelling of 2470781 in words is "two million, four hundred seventy thousand, seven hundred eighty-one".