63720097 has 32 divisors (see below), whose sum is σ = 83165184. Its totient is φ = 47520000.

The previous prime is 63720089. The next prime is 63720113. The reversal of 63720097 is 79002736.

It is a cyclic number.

It is not a de Polignac number, because 63720097 - 2³ = 63720089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63720017) 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, 84472 + ... + 85222.

It is an arithmetic number, because the mean of its divisors is an integer number (2598912).

Almost surely, 2^63720097 is an apocalyptic number.

It is an amenable number.

63720097 is a deficient number, since it is larger than the sum of its proper divisors (19445087).

63720097 is a wasteful number, since it uses less digits than its factorization.

63720097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 63720097 is about 7982.4868931931. The cubic root of 63720097 is about 399.4160165733.

The spelling of 63720097 in words is "sixty-three million, seven hundred twenty thousand, ninety-seven".