61457678 has 16 divisors (see below), whose sum is σ = 93746160. Its totient is φ = 30211776.

The previous prime is 61457677. The next prime is 61457689. The reversal of 61457678 is 87675416.

61457678 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 (61457677) 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, 73901 + ... + 74727.

It is an arithmetic number, because the mean of its divisors is an integer number (5859135).

Almost surely, 2^61457678 is an apocalyptic number.

61457678 is a deficient number, since it is larger than the sum of its proper divisors (32288482).

61457678 is a wasteful number, since it uses less digits than its factorization.

61457678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411.

The product of its digits is 282240, while the sum is 44.

The square root of 61457678 is about 7839.4947541280. The cubic root of 61457678 is about 394.6317734869.

The spelling of 61457678 in words is "sixty-one million, four hundred fifty-seven thousand, six hundred seventy-eight".