61447008 has 96 divisors (see below), whose sum is σ = 187488000. Its totient is φ = 17256960.

The previous prime is 61446977. The next prime is 61447013. The reversal of 61447008 is 80074416.

61447008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40243 + ... + 41741.

It is an arithmetic number, because the mean of its divisors is an integer number (1953000).

Almost surely, 2^61447008 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 61447008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93744000).

61447008 is an abundant number, since it is smaller than the sum of its proper divisors (126040992).

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

61447008 is a wasteful number, since it uses less digits than its factorization.

61447008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 61447008 is about 7838.8141960376. The cubic root of 61447008 is about 394.6089341126.

The spelling of 61447008 in words is "sixty-one million, four hundred forty-seven thousand, eight".