61716340 has 24 divisors (see below), whose sum is σ = 148119552. Its totient is φ = 21159840.

The previous prime is 61716329. The next prime is 61716349. The reversal of 61716340 is 4361716.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 61716299 and 61716308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61716349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220276 + ... + 220555.

It is an arithmetic number, because the mean of its divisors is an integer number (6171648).

Almost surely, 2^61716340 is an apocalyptic number.

It is an amenable number.

61716340 is an abundant number, since it is smaller than the sum of its proper divisors (86403212).

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

61716340 is a wasteful number, since it uses less digits than its factorization.

61716340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440847 (or 440845 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61716340 is about 7855.9747962936. The cubic root of 61716340 is about 395.1846383496.

The spelling of 61716340 in words is "sixty-one million, seven hundred sixteen thousand, three hundred forty".