61238247 has 8 divisors (see below), whose sum is σ = 93315456. Its totient is φ = 34993272.

The previous prime is 61238209. The next prime is 61238249. The reversal of 61238247 is 74283216.

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

It is not a de Polignac number, because 61238247 - 2⁶ = 61238183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61238249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458033 + ... + 1458074.

It is an arithmetic number, because the mean of its divisors is an integer number (11664432).

Almost surely, 2^61238247 is an apocalyptic number.

61238247 is a deficient number, since it is larger than the sum of its proper divisors (32077209).

61238247 is a wasteful number, since it uses less digits than its factorization.

61238247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916117.

The product of its digits is 16128, while the sum is 33.

The square root of 61238247 is about 7825.4870135986. The cubic root of 61238247 is about 394.1615436065.

The spelling of 61238247 in words is "sixty-one million, two hundred thirty-eight thousand, two hundred forty-seven".