61745718 has 32 divisors (see below), whose sum is σ = 126047232. Its totient is φ = 20160000.

The previous prime is 61745693. The next prime is 61745737. The reversal of 61745718 is 81754716.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81843 + ... + 82593.

It is an arithmetic number, because the mean of its divisors is an integer number (3938976).

Almost surely, 2^61745718 is an apocalyptic number.

61745718 is an abundant number, since it is smaller than the sum of its proper divisors (64301514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61745718 is a wasteful number, since it uses less digits than its factorization.

61745718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its digits is 47040, while the sum is 39.

The square root of 61745718 is about 7857.8443608919. The cubic root of 61745718 is about 395.2473332137.

The spelling of 61745718 in words is "sixty-one million, seven hundred forty-five thousand, seven hundred eighteen".