61725340 has 48 divisors (see below), whose sum is σ = 138458880. Its totient is φ = 23063040.

The previous prime is 61725331. The next prime is 61725343. The reversal of 61725340 is 4352716.

It is a junction number, because it is equal to n+sod(n) for n = 61725299 and 61725308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61725343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16264 + ... + 19696.

It is an arithmetic number, because the mean of its divisors is an integer number (2884560).

Almost surely, 2^61725340 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 61725340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69229440).

61725340 is an abundant number, since it is smaller than the sum of its proper divisors (76733540).

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

61725340 is a wasteful number, since it uses less digits than its factorization.

61725340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3500 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 61725340 is about 7856.5475878403. The cubic root of 61725340 is about 395.2038471408.

The spelling of 61725340 in words is "sixty-one million, seven hundred twenty-five thousand, three hundred forty".