75478 has 8 divisors (see below), whose sum is σ = 121968. Its totient is φ = 34824.

The previous prime is 75437. The next prime is 75479. The reversal of 75478 is 87457.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426 + ... + 1477.

It is an arithmetic number, because the mean of its divisors is an integer number (15246).

2⁷⁵⁴⁷⁸ is an apocalyptic number.

75478 is a deficient number, since it is larger than the sum of its proper divisors (46490).

75478 is a wasteful number, since it uses less digits than its factorization.

75478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918.

The product of its digits is 7840, while the sum is 31.

The square root of 75478 is about 274.7325972650. The cubic root of 75478 is about 42.2610348964.

The spelling of 75478 in words is "seventy-five thousand, four hundred seventy-eight".