61481711 has 8 divisors (see below), whose sum is σ = 65654400. Its totient is φ = 57445920.

The previous prime is 61481689. The next prime is 61481723. The reversal of 61481711 is 11718416.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61481711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61480711) 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, 33296 + ... + 35093.

It is an arithmetic number, because the mean of its divisors is an integer number (8206800).

Almost surely, 2^61481711 is an apocalyptic number.

61481711 is a deficient number, since it is larger than the sum of its proper divisors (4172689).

61481711 is a wasteful number, since it uses less digits than its factorization.

61481711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68449.

The product of its digits is 1344, while the sum is 29.

The square root of 61481711 is about 7841.0274199240. The cubic root of 61481711 is about 394.6832069813.

The spelling of 61481711 in words is "sixty-one million, four hundred eighty-one thousand, seven hundred eleven".