61450778 has 8 divisors (see below), whose sum is σ = 92285568. Its totient is φ = 30688924.

The previous prime is 61450777. The next prime is 61450787. The reversal of 61450778 is 87705416.

61450778 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 not an unprimeable number, because it can be changed into a prime (61450771) 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, 16076 + ... + 19527.

It is an arithmetic number, because the mean of its divisors is an integer number (11535696).

Almost surely, 2^61450778 is an apocalyptic number.

61450778 is a deficient number, since it is larger than the sum of its proper divisors (30834790).

61450778 is a wasteful number, since it uses less digits than its factorization.

61450778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36468.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 61450778 is about 7839.0546623939. The cubic root of 61450778 is about 394.6170041842.

The spelling of 61450778 in words is "sixty-one million, four hundred fifty thousand, seven hundred seventy-eight".