63309897 has 16 divisors (see below), whose sum is σ = 107191680. Its totient is φ = 36176976.

The previous prime is 63309859. The next prime is 63309899. The reversal of 63309897 is 79890336.

It is a happy number.

63309897 is a `hidden beast` number, since 633 + 0 + 9 + 8 + 9 + 7 = 666.

It is not a de Polignac number, because 63309897 - 2⁷ = 63309769 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (63309899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167298 + ... + 167675.

It is an arithmetic number, because the mean of its divisors is an integer number (6699480).

Almost surely, 2^63309897 is an apocalyptic number.

It is an amenable number.

63309897 is a deficient number, since it is larger than the sum of its proper divisors (43881783).

63309897 is a wasteful number, since it uses less digits than its factorization.

63309897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334989 (or 334983 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 63309897 is about 7956.7516613251. The cubic root of 63309897 is about 398.5570866782.

The spelling of 63309897 in words is "sixty-three million, three hundred nine thousand, eight hundred ninety-seven".