61808448 has 56 divisors (see below), whose sum is σ = 176121568. Its totient is φ = 19017216.

The previous prime is 61808407. The next prime is 61808449. The reversal of 61808448 is 84480816.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61808449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9886 + ... + 14877.

It is an arithmetic number, because the mean of its divisors is an integer number (3145028).

Almost surely, 2^61808448 is an apocalyptic number.

It is an amenable number.

61808448 is an abundant number, since it is smaller than the sum of its proper divisors (114313120).

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

61808448 is a wasteful number, since it uses less digits than its factorization.

61808448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24791 (or 24781 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 61808448 is about 7861.8349003270. The cubic root of 61808448 is about 395.3811372214.

The spelling of 61808448 in words is "sixty-one million, eight hundred eight thousand, four hundred forty-eight".