61140347 has 16 divisors (see below), whose sum is σ = 69104160. Its totient is φ = 53747712.

The previous prime is 61140341. The next prime is 61140349. The reversal of 61140347 is 74304116.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61140347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61140341) 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 15 ways as a sum of consecutive naturals, for example, 22283 + ... + 24875.

It is an arithmetic number, because the mean of its divisors is an integer number (4319010).

Almost surely, 2^61140347 is an apocalyptic number.

61140347 is a deficient number, since it is larger than the sum of its proper divisors (7963813).

61140347 is a wasteful number, since it uses less digits than its factorization.

61140347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 61140347 is about 7819.2293098489. The cubic root of 61140347 is about 393.9513862908.

The spelling of 61140347 in words is "sixty-one million, one hundred forty thousand, three hundred forty-seven".