61745717 has 12 divisors (see below), whose sum is σ = 71558016. Its totient is φ = 52827840.

The previous prime is 61745693. The next prime is 61745737. The reversal of 61745717 is 71754716.

It is a happy number.

It is not a de Polignac number, because 61745717 - 2⁸ = 61745461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61745737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6533 + ... + 12890.

It is an arithmetic number, because the mean of its divisors is an integer number (5963168).

Almost surely, 2^61745717 is an apocalyptic number.

It is an amenable number.

61745717 is a deficient number, since it is larger than the sum of its proper divisors (9812299).

61745717 is a wasteful number, since it uses less digits than its factorization.

61745717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19468 (or 19451 counting only the distinct ones).

The product of its digits is 41160, while the sum is 38.

The square root of 61745717 is about 7857.8442972612. The cubic root of 61745717 is about 395.2473310800.

The spelling of 61745717 in words is "sixty-one million, seven hundred forty-five thousand, seven hundred seventeen".