7868477 has 2 divisors, whose sum is σ = 7868478. Its totient is φ = 7868476.

The previous prime is 7868453. The next prime is 7868491. The reversal of 7868477 is 7748687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7365796 + 502681 = 2714^2 + 709^2 .

It is an emirp because it is prime and its reverse (7748687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7868477 - 2¹⁴ = 7852093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7868437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3934238 + 3934239.

It is an arithmetic number, because the mean of its divisors is an integer number (3934239).

Almost surely, 2^7868477 is an apocalyptic number.

It is an amenable number.

7868477 is a deficient number, since it is larger than the sum of its proper divisors (1).

7868477 is an equidigital number, since it uses as much as digits as its factorization.

7868477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 526848, while the sum is 47.

The square root of 7868477 is about 2805.0805692529. The cubic root of 7868477 is about 198.8979131781.

The spelling of 7868477 in words is "seven million, eight hundred sixty-eight thousand, four hundred seventy-seven".