61420772 has 12 divisors (see below), whose sum is σ = 122841600. Its totient is φ = 26323176.

The previous prime is 61420771. The next prime is 61420819. The reversal of 61420772 is 27702416.

61420772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

61420772 is an admirable number.

It is a super-2 number, since 2×61420772² = 7545022466151968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61420771) 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 3 ways as a sum of consecutive naturals, for example, 1096772 + ... + 1096827.

It is an arithmetic number, because the mean of its divisors is an integer number (10236800).

Almost surely, 2^61420772 is an apocalyptic number.

It is an amenable number.

61420772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61420772 is a wasteful number, since it uses less digits than its factorization.

61420772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193610 (or 2193608 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 61420772 is about 7837.1405499710. The cubic root of 61420772 is about 394.5527641208.

The spelling of 61420772 in words is "sixty-one million, four hundred twenty thousand, seven hundred seventy-two".