61383648 has 48 divisors (see below), whose sum is σ = 161799120. Its totient is φ = 20376576.

The previous prime is 61383643. The next prime is 61383667. The reversal of 61383648 is 84638316.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61383643) 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, 24636 + ... + 27012.

It is an arithmetic number, because the mean of its divisors is an integer number (3370815).

Almost surely, 2^61383648 is an apocalyptic number.

It is an amenable number.

61383648 is an abundant number, since it is smaller than the sum of its proper divisors (100415472).

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

61383648 is a wasteful number, since it uses less digits than its factorization.

61383648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659 (or 2651 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 61383648 is about 7834.7717260939. The cubic root of 61383648 is about 394.4732561173.

The spelling of 61383648 in words is "sixty-one million, three hundred eighty-three thousand, six hundred forty-eight".