61170247 has 4 divisors (see below), whose sum is σ = 61245576. Its totient is φ = 61094920.

The previous prime is 61170227. The next prime is 61170257. The reversal of 61170247 is 74207116.

61170247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61170247 - 2⁷ = 61170119 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 (61170227) 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 3 ways as a sum of consecutive naturals, for example, 36433 + ... + 38074.

It is an arithmetic number, because the mean of its divisors is an integer number (15311394).

Almost surely, 2^61170247 is an apocalyptic number.

61170247 is a deficient number, since it is larger than the sum of its proper divisors (75329).

61170247 is an equidigital number, since it uses as much as digits as its factorization.

61170247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75328.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 61170247 is about 7821.1410292872. The cubic root of 61170247 is about 394.0155949920.

The spelling of 61170247 in words is "sixty-one million, one hundred seventy thousand, two hundred forty-seven".