61715673 has 6 divisors (see below), whose sum is σ = 89144874. Its totient is φ = 41143776.

The previous prime is 61715639. The next prime is 61715677. The reversal of 61715673 is 37651716.

It can be written as a sum of positive squares in only one way, i.e., 39841344 + 21874329 = 6312^2 + 4677^2 .

It is not a de Polignac number, because 61715673 - 2²⁰ = 60667097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61715677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3428640 + ... + 3428657.

It is an arithmetic number, because the mean of its divisors is an integer number (14857479).

Almost surely, 2^61715673 is an apocalyptic number.

It is an amenable number.

61715673 is a deficient number, since it is larger than the sum of its proper divisors (27429201).

61715673 is a wasteful number, since it uses less digits than its factorization.

61715673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857303 (or 6857300 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 61715673 is about 7855.9323444134. The cubic root of 61715673 is about 395.1832146904.

It can be divided in two parts, 617 and 15673, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 61715673 in words is "sixty-one million, seven hundred fifteen thousand, six hundred seventy-three".