61715671 has 4 divisors (see below), whose sum is σ = 62026000. Its totient is φ = 61405344.

The previous prime is 61715639. The next prime is 61715677. The reversal of 61715671 is 17651716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61715671 - 2⁵ = 61715639 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 (61715677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154866 + ... + 155263.

It is an arithmetic number, because the mean of its divisors is an integer number (15506500).

Almost surely, 2^61715671 is an apocalyptic number.

61715671 is a deficient number, since it is larger than the sum of its proper divisors (310329).

61715671 is a wasteful number, since it uses less digits than its factorization.

61715671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310328.

The product of its digits is 8820, while the sum is 34.

The square root of 61715671 is about 7855.9322171210. The cubic root of 61715671 is about 395.1832104216.

The spelling of 61715671 in words is "sixty-one million, seven hundred fifteen thousand, six hundred seventy-one".