61717898 has 16 divisors (see below), whose sum is σ = 101117376. Its totient is φ = 28019040.

The previous prime is 61717897. The next prime is 61717913. The reversal of 61717898 is 89871716.

It is not an unprimeable number, because it can be changed into a prime (61717891) 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, 27590 + ... + 29742.

It is an arithmetic number, because the mean of its divisors is an integer number (6319836).

Almost surely, 2^61717898 is an apocalyptic number.

61717898 is a deficient number, since it is larger than the sum of its proper divisors (39399478).

61717898 is a wasteful number, since it uses less digits than its factorization.

61717898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469.

The product of its digits is 169344, while the sum is 47.

The square root of 61717898 is about 7856.0739558637. The cubic root of 61717898 is about 395.1879637384.

The spelling of 61717898 in words is "sixty-one million, seven hundred seventeen thousand, eight hundred ninety-eight".