61740005 has 16 divisors (see below), whose sum is σ = 78899184. Its totient is φ = 46218240.

The previous prime is 61739957. The next prime is 61740011. The reversal of 61740005 is 50004716.

It can be written as a sum of positive squares in 8 ways, for example, as 368449 + 61371556 = 607^2 + 7834^2 .

It is not a de Polignac number, because 61740005 - 2¹² = 61735909 is a prime.

It is a Duffinian 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, 13379 + ... + 17391.

It is an arithmetic number, because the mean of its divisors is an integer number (4931199).

Almost surely, 2^61740005 is an apocalyptic number.

It is an amenable number.

61740005 is a deficient number, since it is larger than the sum of its proper divisors (17159179).

61740005 is a wasteful number, since it uses less digits than its factorization.

61740005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 61740005 is about 7857.4808303934. The cubic root of 61740005 is about 395.2351427994.

The spelling of 61740005 in words is "sixty-one million, seven hundred forty thousand, five".