7468781 has 2 divisors, whose sum is σ = 7468782. Its totient is φ = 7468780.

The previous prime is 7468771. The next prime is 7468787. The reversal of 7468781 is 1878647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5248681 + 2220100 = 2291^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 7468781 - 2¹⁴ = 7452397 is a prime.

It is a super-2 number, since 2×7468781² = 111565379251922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7468787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3734390 + 3734391.

It is an arithmetic number, because the mean of its divisors is an integer number (3734391).

Almost surely, 2^7468781 is an apocalyptic number.

It is an amenable number.

7468781 is a deficient number, since it is larger than the sum of its proper divisors (1).

7468781 is an equidigital number, since it uses as much as digits as its factorization.

7468781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 41.

The square root of 7468781 is about 2732.9070602565. The cubic root of 7468781 is about 195.4714082244.

The spelling of 7468781 in words is "seven million, four hundred sixty-eight thousand, seven hundred eighty-one".