61740784 has 60 divisors (see below), whose sum is σ = 141543768. Its totient is φ = 26006400.

The previous prime is 61740773. The next prime is 61740803. The reversal of 61740784 is 48704716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47179 + ... + 48469.

Almost surely, 2^61740784 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 61740784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70771884).

61740784 is an abundant number, since it is smaller than the sum of its proper divisors (79802984).

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

61740784 is a wasteful number, since it uses less digits than its factorization.

61740784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 61740784 is about 7857.5304008321. The cubic root of 61740784 is about 395.2368050759.

The spelling of 61740784 in words is "sixty-one million, seven hundred forty thousand, seven hundred eighty-four".