61364920 has 32 divisors (see below), whose sum is σ = 144076320. Its totient is φ = 23478400.

The previous prime is 61364911. The next prime is 61364921. The reversal of 61364920 is 2946316.

61364920 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 (61364921) 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 7 ways as a sum of consecutive naturals, for example, 32431 + ... + 34270.

It is an arithmetic number, because the mean of its divisors is an integer number (4502385).

Almost surely, 2^61364920 is an apocalyptic number.

It is an amenable number.

61364920 is an abundant number, since it is smaller than the sum of its proper divisors (82711400).

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

61364920 is a wasteful number, since it uses less digits than its factorization.

61364920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66735 (or 66731 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 61364920 is about 7833.5764501280. The cubic root of 61364920 is about 394.4331344300.

The spelling of 61364920 in words is "sixty-one million, three hundred sixty-four thousand, nine hundred twenty".