61718495 has 4 divisors (see below), whose sum is σ = 74062200. Its totient is φ = 49374792.

The previous prime is 61718471. The next prime is 61718497. The reversal of 61718495 is 59481716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61718495 - 2¹⁰ = 61717471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61718497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6171845 + ... + 6171854.

It is an arithmetic number, because the mean of its divisors is an integer number (18515550).

Almost surely, 2^61718495 is an apocalyptic number.

61718495 is a deficient number, since it is larger than the sum of its proper divisors (12343705).

61718495 is a wasteful number, since it uses less digits than its factorization.

61718495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12343704.

The product of its digits is 60480, while the sum is 41.

The square root of 61718495 is about 7856.1119518500. Note that the first 3 decimals coincide. The cubic root of 61718495 is about 395.1892379580.

The spelling of 61718495 in words is "sixty-one million, seven hundred eighteen thousand, four hundred ninety-five".