78763801 has 2 divisors, whose sum is σ = 78763802. Its totient is φ = 78763800.

The previous prime is 78763781. The next prime is 78763807. The reversal of 78763801 is 10836787.

78763801 = 6275² + 6276².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39388176 + 39375625 = 6276^2 + 6275^2 .

It is a cyclic number.

It is not a de Polignac number, because 78763801 - 2⁷ = 78763673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78763807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39381900 + 39381901.

It is an arithmetic number, because the mean of its divisors is an integer number (39381901).

Almost surely, 2^78763801 is an apocalyptic number.

78763801 is the 6276-th centered square number.

It is an amenable number.

78763801 is a deficient number, since it is larger than the sum of its proper divisors (1).

78763801 is an equidigital number, since it uses as much as digits as its factorization.

78763801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 78763801 is about 8874.8972388417. The cubic root of 78763801 is about 428.6559819575.

The spelling of 78763801 in words is "seventy-eight million, seven hundred sixty-three thousand, eight hundred one".