63257911 has 4 divisors (see below), whose sum is σ = 64603872. Its totient is φ = 61911952.

The previous prime is 63257899. The next prime is 63257917. The reversal of 63257911 is 11975236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63257911 - 2⁵ = 63257879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63257917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672910 + ... + 673003.

It is an arithmetic number, because the mean of its divisors is an integer number (16150968).

Almost surely, 2^63257911 is an apocalyptic number.

63257911 is a deficient number, since it is larger than the sum of its proper divisors (1345961).

63257911 is a wasteful number, since it uses less digits than its factorization.

63257911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345960.

The product of its digits is 11340, while the sum is 34.

The square root of 63257911 is about 7953.4842050513. The cubic root of 63257911 is about 398.4479670227.

The spelling of 63257911 in words is "sixty-three million, two hundred fifty-seven thousand, nine hundred eleven".