61259856 has 80 divisors (see below), whose sum is σ = 188749824. Its totient is φ = 16739712.

The previous prime is 61259851. The next prime is 61259881. The reversal of 61259856 is 65895216.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61259851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3765 + ... + 11691.

Almost surely, 2^61259856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61259856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94374912).

61259856 is an abundant number, since it is smaller than the sum of its proper divisors (127489968).

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

61259856 is a wasteful number, since it uses less digits than its factorization.

61259856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968 (or 7962 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 61259856 is about 7826.8675726628. The cubic root of 61259856 is about 394.2079004481.

The spelling of 61259856 in words is "sixty-one million, two hundred fifty-nine thousand, eight hundred fifty-six".