63061391 has 2 divisors, whose sum is σ = 63061392. Its totient is φ = 63061390.

The previous prime is 63061387. The next prime is 63061421. The reversal of 63061391 is 19316036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63061391 - 2² = 63061387 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63061301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31530695 + 31530696.

It is an arithmetic number, because the mean of its divisors is an integer number (31530696).

Almost surely, 2^63061391 is an apocalyptic number.

63061391 is a deficient number, since it is larger than the sum of its proper divisors (1).

63061391 is an equidigital number, since it uses as much as digits as its factorization.

63061391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 63061391 is about 7941.1202610211. The cubic root of 63061391 is about 398.0349266084.

The spelling of 63061391 in words is "sixty-three million, sixty-one thousand, three hundred ninety-one".