61983744 has 44 divisors (see below), whose sum is σ = 165217464. Its totient is φ = 20660224.

The previous prime is 61983743. The next prime is 61983797. The reversal of 61983744 is 44738916.

It is a junction number, because it is equal to n+sod(n) for n = 61983696 and 61983705.

It is not an unprimeable number, because it can be changed into a prime (61983743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7017 + ... + 13160.

Almost surely, 2^61983744 is an apocalyptic number.

61983744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61983744 is an abundant number, since it is smaller than the sum of its proper divisors (103233720).

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

61983744 is a wasteful number, since it uses less digits than its factorization.

61983744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200 (or 20182 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 61983744 is about 7872.9755493079. The cubic root of 61983744 is about 395.7545668229.

The spelling of 61983744 in words is "sixty-one million, nine hundred eighty-three thousand, seven hundred forty-four".