61705471 has 2 divisors, whose sum is σ = 61705472. Its totient is φ = 61705470.

The previous prime is 61705463. The next prime is 61705477. The reversal of 61705471 is 17450716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61705471 - 2³ = 61705463 is a prime.

It is a super-3 number, since 3×61705471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61705477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30852735 + 30852736.

It is an arithmetic number, because the mean of its divisors is an integer number (30852736).

Almost surely, 2^61705471 is an apocalyptic number.

61705471 is a deficient number, since it is larger than the sum of its proper divisors (1).

61705471 is an equidigital number, since it uses as much as digits as its factorization.

61705471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 61705471 is about 7855.2829993578. The cubic root of 61705471 is about 395.1614380431.

The spelling of 61705471 in words is "sixty-one million, seven hundred five thousand, four hundred seventy-one".