61772870 has 16 divisors (see below), whose sum is σ = 113015088. Its totient is φ = 24303840.

The previous prime is 61772827. The next prime is 61772873. The reversal of 61772870 is 7827716.

61772870 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 (61772873) 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, 50024 + ... + 51243.

It is an arithmetic number, because the mean of its divisors is an integer number (7063443).

Almost surely, 2^61772870 is an apocalyptic number.

61772870 is a deficient number, since it is larger than the sum of its proper divisors (51242218).

61772870 is a wasteful number, since it uses less digits than its factorization.

61772870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101335.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 61772870 is about 7859.5718712917. The cubic root of 61772870 is about 395.3052599454.

The spelling of 61772870 in words is "sixty-one million, seven hundred seventy-two thousand, eight hundred seventy".