61085577 has 8 divisors (see below), whose sum is σ = 93082816. Its totient is φ = 34906032.

The previous prime is 61085567. The next prime is 61085579. The reversal of 61085577 is 77558016.

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

It is not a de Polignac number, because 61085577 - 2⁴ = 61085561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61085579) 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, 1454398 + ... + 1454439.

It is an arithmetic number, because the mean of its divisors is an integer number (11635352).

Almost surely, 2^61085577 is an apocalyptic number.

It is an amenable number.

61085577 is a deficient number, since it is larger than the sum of its proper divisors (31997239).

61085577 is a wasteful number, since it uses less digits than its factorization.

61085577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908847.

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

The square root of 61085577 is about 7815.7262618390. The cubic root of 61085577 is about 393.8337162384.

The spelling of 61085577 in words is "sixty-one million, eighty-five thousand, five hundred seventy-seven".