75477 has 8 divisors (see below), whose sum is σ = 101920. Its totient is φ = 49680.

The previous prime is 75437. The next prime is 75479. The reversal of 75477 is 77457.

It is a happy number.

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

It is not a de Polignac number, because 75477 - 2¹⁰ = 74453 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 75477.

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 7 ways as a sum of consecutive naturals, for example, 327 + ... + 507.

It is an arithmetic number, because the mean of its divisors is an integer number (12740).

2⁷⁵⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

75477 is a deficient number, since it is larger than the sum of its proper divisors (26443).

75477 is a wasteful number, since it uses less digits than its factorization.

75477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323.

The product of its digits is 6860, while the sum is 30.

The square root of 75477 is about 274.7307773075. The cubic root of 75477 is about 42.2608482583.

The spelling of 75477 in words is "seventy-five thousand, four hundred seventy-seven".