63270391 has 2 divisors, whose sum is σ = 63270392. Its totient is φ = 63270390.

The previous prime is 63270377. The next prime is 63270397. The reversal of 63270391 is 19307236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63270391 - 2⁹ = 63269879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63270397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31635195 + 31635196.

It is an arithmetic number, because the mean of its divisors is an integer number (31635196).

Almost surely, 2^63270391 is an apocalyptic number.

63270391 is a deficient number, since it is larger than the sum of its proper divisors (1).

63270391 is an equidigital number, since it uses as much as digits as its factorization.

63270391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 63270391 is about 7954.2687281736. The cubic root of 63270391 is about 398.4741682444.

The spelling of 63270391 in words is "sixty-three million, two hundred seventy thousand, three hundred ninety-one".