61920612 has 120 divisors (see below), whose sum is σ = 177917432. Its totient is φ = 18662400.

The previous prime is 61920581. The next prime is 61920659. The reversal of 61920612 is 21602916.

61920612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 61873956 = 216^2 + 7866^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 256812 + ... + 257052.

Almost surely, 2^61920612 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 61920612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88958716).

61920612 is an abundant number, since it is smaller than the sum of its proper divisors (115996820).

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

61920612 is a wasteful number, since it uses less digits than its factorization.

61920612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 61920612 is about 7868.9651162017. The cubic root of 61920612 is about 395.6201591915.

The spelling of 61920612 in words is "sixty-one million, nine hundred twenty thousand, six hundred twelve".