61428945 has 8 divisors (see below), whose sum is σ = 98286336. Its totient is φ = 32762096.

The previous prime is 61428923. The next prime is 61428959. The reversal of 61428945 is 54982416.

61428945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61428945 - 2¹⁰ = 61427921 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2047617 + ... + 2047646.

It is an arithmetic number, because the mean of its divisors is an integer number (12285792).

Almost surely, 2^61428945 is an apocalyptic number.

It is an amenable number.

61428945 is a deficient number, since it is larger than the sum of its proper divisors (36857391).

61428945 is a wasteful number, since it uses less digits than its factorization.

61428945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095271.

The product of its digits is 69120, while the sum is 39.

The square root of 61428945 is about 7837.6619600491. The cubic root of 61428945 is about 394.5702638288.

The spelling of 61428945 in words is "sixty-one million, four hundred twenty-eight thousand, nine hundred forty-five".