61397097 has 16 divisors (see below), whose sum is σ = 87734400. Its totient is φ = 38092032.

The previous prime is 61397069. The next prime is 61397099. The reversal of 61397097 is 79079316.

61397097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61397097 - 2⁶ = 61397033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61397099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9472 + ... + 14577.

It is an arithmetic number, because the mean of its divisors is an integer number (5483400).

Almost surely, 2^61397097 is an apocalyptic number.

It is an amenable number.

61397097 is a deficient number, since it is larger than the sum of its proper divisors (26337303).

61397097 is a wasteful number, since it uses less digits than its factorization.

61397097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24112.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 61397097 is about 7835.6299682923. The cubic root of 61397097 is about 394.5020633734.

The spelling of 61397097 in words is "sixty-one million, three hundred ninety-seven thousand, ninety-seven".