61478 has 8 divisors (see below), whose sum is σ = 93960. Its totient is φ = 30160.

The previous prime is 61471. The next prime is 61483. The reversal of 61478 is 87416.

61478 is nontrivially palindromic in base 12.

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

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61471) by changing a digit.

61478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 378.

It is an arithmetic number, because the mean of its divisors is an integer number (11745).

2⁶¹⁴⁷⁸ is an apocalyptic number.

61478 is a deficient number, since it is larger than the sum of its proper divisors (32482).

61478 is a wasteful number, since it uses less digits than its factorization.

61478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582.

The product of its digits is 1344, while the sum is 26.

The square root of 61478 is about 247.9475751041. The cubic root of 61478 is about 39.4675265873.

Adding to 61478 its sum of digits (26), we get a square (61504 = 248²).

The spelling of 61478 in words is "sixty-one thousand, four hundred seventy-eight".