61761085 has 8 divisors (see below), whose sum is σ = 78473016. Its totient is φ = 46502400.

The previous prime is 61761053. The next prime is 61761113. The reversal of 61761085 is 58016716.

It can be written as a sum of positive squares in 4 ways, for example, as 9603801 + 52157284 = 3099^2 + 7222^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61761085 - 2⁵ = 61761053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61761085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363216 + ... + 363385.

It is an arithmetic number, because the mean of its divisors is an integer number (9809127).

Almost surely, 2^61761085 is an apocalyptic number.

It is an amenable number.

61761085 is a deficient number, since it is larger than the sum of its proper divisors (16711931).

61761085 is a wasteful number, since it uses less digits than its factorization.

61761085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726623.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 61761085 is about 7858.8221127596. The cubic root of 61761085 is about 395.2801196274.

The spelling of 61761085 in words is "sixty-one million, seven hundred sixty-one thousand, eighty-five".