63428897 has 32 divisors (see below), whose sum is σ = 79564800. Its totient is φ = 49362048.

The previous prime is 63428881. The next prime is 63428903. The reversal of 63428897 is 79882436.

It is a cyclic number.

It is not a de Polignac number, because 63428897 - 2⁴ = 63428881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (63428867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456254 + ... + 456392.

It is an arithmetic number, because the mean of its divisors is an integer number (2486400).

Almost surely, 2^63428897 is an apocalyptic number.

It is an amenable number.

63428897 is a deficient number, since it is larger than the sum of its proper divisors (16135903).

63428897 is a wasteful number, since it uses less digits than its factorization.

63428897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 580608, while the sum is 47.

The square root of 63428897 is about 7964.2260766505. The cubic root of 63428897 is about 398.8066453858.

The spelling of 63428897 in words is "sixty-three million, four hundred twenty-eight thousand, eight hundred ninety-seven".