63889257 has 8 divisors (see below), whose sum is σ = 86457376. Its totient is φ = 41956992.

The previous prime is 63889253. The next prime is 63889283. The reversal of 63889257 is 75298836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63889257 - 2² = 63889253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63889253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158728 + ... + 159129.

It is an arithmetic number, because the mean of its divisors is an integer number (10807172).

Almost surely, 2^63889257 is an apocalyptic number.

63889257 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

63889257 is a deficient number, since it is larger than the sum of its proper divisors (22568119).

63889257 is a wasteful number, since it uses less digits than its factorization.

63889257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317927.

The product of its digits is 725760, while the sum is 48.

The square root of 63889257 is about 7993.0755657632. The cubic root of 63889257 is about 399.7691522155.

It can be divided in two parts, 63889 and 257, that added together give a palindrome (64146).

The spelling of 63889257 in words is "sixty-three million, eight hundred eighty-nine thousand, two hundred fifty-seven".