61143349 has 8 divisors (see below), whose sum is σ = 64622880. Its totient is φ = 57690000.

The previous prime is 61143343. The next prime is 61143353. The reversal of 61143349 is 94334116.

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

It is a cyclic number.

It is not a de Polignac number, because 61143349 - 2⁷ = 61143221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61143349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61143343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642 + ... + 11179.

It is an arithmetic number, because the mean of its divisors is an integer number (8077860).

Almost surely, 2^61143349 is an apocalyptic number.

It is an amenable number.

61143349 is a deficient number, since it is larger than the sum of its proper divisors (3479531).

61143349 is a wasteful number, since it uses less digits than its factorization.

61143349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13091.

The product of its digits is 7776, while the sum is 31.

The square root of 61143349 is about 7819.4212701453. The cubic root of 61143349 is about 393.9578338755.

The spelling of 61143349 in words is "sixty-one million, one hundred forty-three thousand, three hundred forty-nine".