63897426 has 24 divisors (see below), whose sum is σ = 138625344. Its totient is φ = 21271320.

The previous prime is 63897419. The next prime is 63897481. The reversal of 63897426 is 62479836.

63897426 is a `hidden beast` number, since 638 + 9 + 7 + 4 + 2 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15571 + ... + 19241.

It is an arithmetic number, because the mean of its divisors is an integer number (5776056).

Almost surely, 2^63897426 is an apocalyptic number.

63897426 is an abundant number, since it is smaller than the sum of its proper divisors (74727918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63897426 is a wasteful number, since it uses less digits than its factorization.

63897426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646 (or 4643 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 63897426 is about 7993.5865542321. The cubic root of 63897426 is about 399.7861899001.

The spelling of 63897426 in words is "sixty-three million, eight hundred ninety-seven thousand, four hundred twenty-six".