61085757 has 8 divisors (see below), whose sum is σ = 83341984. Its totient is φ = 39776688.

The previous prime is 61085753. The next prime is 61085767. The reversal of 61085757 is 75758016.

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

It is not a de Polignac number, because 61085757 - 2² = 61085753 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 (61085753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236638 + ... + 236895.

It is an arithmetic number, because the mean of its divisors is an integer number (10417748).

Almost surely, 2^61085757 is an apocalyptic number.

It is an amenable number.

61085757 is a deficient number, since it is larger than the sum of its proper divisors (22256227).

61085757 is a wasteful number, since it uses less digits than its factorization.

61085757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473579.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 61085757 is about 7815.7377770752. The cubic root of 61085757 is about 393.8341030728.

The spelling of 61085757 in words is "sixty-one million, eighty-five thousand, seven hundred fifty-seven".