61144713 has 20 divisors (see below), whose sum is σ = 104389120. Its totient is φ = 34939512.

The previous prime is 61144711. The next prime is 61144729. The reversal of 61144713 is 31744116.

It is a happy number.

61144713 is a `hidden beast` number, since 611 + 4 + 47 + 1 + 3 = 666.

It is not a de Polignac number, because 61144713 - 2¹ = 61144711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61144711) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53353 + ... + 54486.

It is an arithmetic number, because the mean of its divisors is an integer number (5219456).

Almost surely, 2^61144713 is an apocalyptic number.

61144713 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61144713 is a deficient number, since it is larger than the sum of its proper divisors (43244407).

61144713 is a wasteful number, since it uses less digits than its factorization.

61144713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107858 (or 107849 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 61144713 is about 7819.5084883898. The cubic root of 61144713 is about 393.9607633546.

Adding to 61144713 its reverse (31744116), we get a palindrome (92888829).

The spelling of 61144713 in words is "sixty-one million, one hundred forty-four thousand, seven hundred thirteen".