61449608 has 64 divisors (see below), whose sum is σ = 131760000. Its totient is φ = 26832960.

The previous prime is 61449607. The next prime is 61449649. The reversal of 61449608 is 80694416.

It is not an unprimeable number, because it can be changed into a prime (61449607) 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, 308693 + ... + 308891.

It is an arithmetic number, because the mean of its divisors is an integer number (2058750).

Almost surely, 2^61449608 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 61449608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65880000).

61449608 is an abundant number, since it is smaller than the sum of its proper divisors (70310392).

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

61449608 is a wasteful number, since it uses less digits than its factorization.

61449608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 61449608 is about 7838.9800356934. The cubic root of 61449608 is about 394.6144997145.

The spelling of 61449608 in words is "sixty-one million, four hundred forty-nine thousand, six hundred eight".