61012247 has 4 divisors (see below), whose sum is σ = 62980416. Its totient is φ = 59044080.

The previous prime is 61012229. The next prime is 61012319. The reversal of 61012247 is 74221016.

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 61012247 - 2¹² = 61008151 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 (61012447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984038 + ... + 984099.

It is an arithmetic number, because the mean of its divisors is an integer number (15745104).

Almost surely, 2^61012247 is an apocalyptic number.

61012247 is a deficient number, since it is larger than the sum of its proper divisors (1968169).

61012247 is a wasteful number, since it uses less digits than its factorization.

61012247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968168.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 61012247 is about 7811.0336703922. The cubic root of 61012247 is about 393.6760609632.

The spelling of 61012247 in words is "sixty-one million, twelve thousand, two hundred forty-seven".