61726656 has 56 divisors (see below), whose sum is σ = 167751760. Its totient is φ = 20017152.

The previous prime is 61726579. The next prime is 61726667. The reversal of 61726656 is 65662716.

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, 2760 + ... + 11448.

Almost surely, 2^61726656 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 61726656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83875880).

61726656 is an abundant number, since it is smaller than the sum of its proper divisors (106025104).

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

61726656 is a wasteful number, since it uses less digits than its factorization.

61726656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741 (or 8731 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 61726656 is about 7856.6313391937. The cubic root of 61726656 is about 395.2066557365.

The spelling of 61726656 in words is "sixty-one million, seven hundred twenty-six thousand, six hundred fifty-six".