61085856 has 48 divisors (see below), whose sum is σ = 172688544. Its totient is φ = 18795264.

The previous prime is 61085821. The next prime is 61085863. The reversal of 61085856 is 65858016.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 23226 + ... + 25721.

It is an arithmetic number, because the mean of its divisors is an integer number (3597678).

Almost surely, 2^61085856 is an apocalyptic number.

It is an amenable number.

61085856 is an abundant number, since it is smaller than the sum of its proper divisors (111602688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61085856 is a wasteful number, since it uses less digits than its factorization.

61085856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48973 (or 48965 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 61085856 is about 7815.7441104478. The cubic root of 61085856 is about 393.8343158313.

The spelling of 61085856 in words is "sixty-one million, eighty-five thousand, eight hundred fifty-six".