63399377 has 2 divisors, whose sum is σ = 63399378. Its totient is φ = 63399376.

The previous prime is 63399367. The next prime is 63399383. The reversal of 63399377 is 77399336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54405376 + 8994001 = 7376^2 + 2999^2 .

It is a cyclic number.

It is not a de Polignac number, because 63399377 - 2⁴ = 63399361 is a prime.

It is not a weakly prime, because it can be changed into another prime (63399367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31699688 + 31699689.

It is an arithmetic number, because the mean of its divisors is an integer number (31699689).

Almost surely, 2^63399377 is an apocalyptic number.

It is an amenable number.

63399377 is a deficient number, since it is larger than the sum of its proper divisors (1).

63399377 is an equidigital number, since it uses as much as digits as its factorization.

63399377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 47.

The square root of 63399377 is about 7962.3725735487. The cubic root of 63399377 is about 398.7447671801.

The spelling of 63399377 in words is "sixty-three million, three hundred ninety-nine thousand, three hundred seventy-seven".