61614520 has 64 divisors (see below), whose sum is σ = 152137440. Its totient is φ = 22272000.

The previous prime is 61614503. The next prime is 61614521. The reversal of 61614520 is 2541616.

61614520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61614521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102220 + ... + 102820.

Almost surely, 2^61614520 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 61614520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76068720).

61614520 is an abundant number, since it is smaller than the sum of its proper divisors (90522920).

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

61614520 is a wasteful number, since it uses less digits than its factorization.

61614520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61614520 is about 7849.4917032888. The cubic root of 61614520 is about 394.9671927033.

The spelling of 61614520 in words is "sixty-one million, six hundred fourteen thousand, five hundred twenty".