61880736 has 48 divisors (see below), whose sum is σ = 162860544. Its totient is φ = 20573184.

The previous prime is 61880723. The next prime is 61880747. The reversal of 61880736 is 63708816.

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

It is a junction number, because it is equal to n+sod(n) for n = 61880694 and 61880703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56385 + ... + 57471.

It is an arithmetic number, because the mean of its divisors is an integer number (3392928).

Almost surely, 2^61880736 is an apocalyptic number.

It is an amenable number.

61880736 is an abundant number, since it is smaller than the sum of its proper divisors (100979808).

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

61880736 is a wasteful number, since it uses less digits than its factorization.

61880736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 61880736 is about 7866.4309569207. The cubic root of 61880736 is about 395.5352163557.

The spelling of 61880736 in words is "sixty-one million, eight hundred eighty thousand, seven hundred thirty-six".