63078749 has 2 divisors, whose sum is σ = 63078750. Its totient is φ = 63078748.

The previous prime is 63078713. The next prime is 63078751. The reversal of 63078749 is 94787036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50154724 + 12924025 = 7082^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 63078749 - 2¹⁶ = 63013213 is a prime.

Together with 63078751, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63078779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31539374 + 31539375.

It is an arithmetic number, because the mean of its divisors is an integer number (31539375).

Almost surely, 2^63078749 is an apocalyptic number.

It is an amenable number.

63078749 is a deficient number, since it is larger than the sum of its proper divisors (1).

63078749 is an equidigital number, since it uses as much as digits as its factorization.

63078749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 63078749 is about 7942.2131046705. The cubic root of 63078749 is about 398.0714437035.

The spelling of 63078749 in words is "sixty-three million, seventy-eight thousand, seven hundred forty-nine".