61397077 has 8 divisors (see below), whose sum is σ = 71800256. Its totient is φ = 51401952.

The previous prime is 61397069. The next prime is 61397099. The reversal of 61397077 is 77079316.

61397077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61397077 - 2³ = 61397069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61397027) 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 7 ways as a sum of consecutive naturals, for example, 101688 + ... + 102289.

It is an arithmetic number, because the mean of its divisors is an integer number (8975032).

Almost surely, 2^61397077 is an apocalyptic number.

It is an amenable number.

61397077 is a deficient number, since it is larger than the sum of its proper divisors (10403179).

61397077 is a wasteful number, since it uses less digits than its factorization.

61397077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204027.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 61397077 is about 7835.6286920706. The cubic root of 61397077 is about 394.5020205373.

The spelling of 61397077 in words is "sixty-one million, three hundred ninety-seven thousand, seventy-seven".