63840097 has 4 divisors (see below), whose sum is σ = 63992880. Its totient is φ = 63687316.

The previous prime is 63840089. The next prime is 63840103. The reversal of 63840097 is 79004836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63840097 - 2³ = 63840089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63870097) 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, 75763 + ... + 76600.

It is an arithmetic number, because the mean of its divisors is an integer number (15998220).

Almost surely, 2^63840097 is an apocalyptic number.

It is an amenable number.

63840097 is a deficient number, since it is larger than the sum of its proper divisors (152783).

63840097 is a wasteful number, since it uses less digits than its factorization.

63840097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152782.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 63840097 is about 7989.9998122653. Note that the first 3 decimals coincide. The cubic root of 63840097 is about 399.6665909232. Note that the first 3 decimals are identical.

The spelling of 63840097 in words is "sixty-three million, eight hundred forty thousand, ninety-seven".