61423656 has 96 divisors (see below), whose sum is σ = 188100000. Its totient is φ = 16619904.

The previous prime is 61423643. The next prime is 61423667. The reversal of 61423656 is 65632416.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20970 + ... + 23718.

It is an arithmetic number, because the mean of its divisors is an integer number (1959375).

Almost surely, 2^61423656 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 61423656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94050000).

61423656 is an abundant number, since it is smaller than the sum of its proper divisors (126676344).

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

61423656 is a wasteful number, since it uses less digits than its factorization.

61423656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791 (or 2780 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 61423656 is about 7837.3245434906. The cubic root of 61423656 is about 394.5589394060.

The spelling of 61423656 in words is "sixty-one million, four hundred twenty-three thousand, six hundred fifty-six".