61718750 has 36 divisors (see below), whose sum is σ = 117187440. Its totient is φ = 24375000.

The previous prime is 61718749. The next prime is 61718759. The reversal of 61718750 is 5781716.

It is a self number, because there is not a number n which added to its sum of digits gives 61718750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61718759) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 781211 + ... + 781289.

Almost surely, 2^61718750 is an apocalyptic number.

61718750 is a deficient number, since it is larger than the sum of its proper divisors (55468690).

61718750 is an frugal number, since it uses more digits than its factorization.

61718750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 61718750 is about 7856.1281812353. The cubic root of 61718750 is about 395.1897822201.

The spelling of 61718750 in words is "sixty-one million, seven hundred eighteen thousand, seven hundred fifty".