61519713 has 24 divisors (see below), whose sum is σ = 86003808. Its totient is φ = 39092928.

The previous prime is 61519693. The next prime is 61519723. The reversal of 61519713 is 31791516.

It is a happy number.

It is not a de Polignac number, because 61519713 - 2¹⁴ = 61503329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61519723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448981 + ... + 449117.

It is an arithmetic number, because the mean of its divisors is an integer number (3583492).

Almost surely, 2^61519713 is an apocalyptic number.

It is an amenable number.

61519713 is a deficient number, since it is larger than the sum of its proper divisors (24484095).

61519713 is a wasteful number, since it uses less digits than its factorization.

61519713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 242 counting only the distinct ones).

The product of its digits is 5670, while the sum is 33.

The square root of 61519713 is about 7843.4503249527. The cubic root of 61519713 is about 394.7645084599.

The spelling of 61519713 in words is "sixty-one million, five hundred nineteen thousand, seven hundred thirteen".