74945 has 8 divisors (see below), whose sum is σ = 96936. Its totient is φ = 55296.

The previous prime is 74941. The next prime is 74959. The reversal of 74945 is 54947.

It can be written as a sum of positive squares in 4 ways, for example, as 5776 + 69169 = 76^2 + 263^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 74945 - 2² = 74941 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74941) 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, 512 + ... + 641.

It is an arithmetic number, because the mean of its divisors is an integer number (12117).

2⁷⁴⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

74945 is a deficient number, since it is larger than the sum of its proper divisors (21991).

74945 is a wasteful number, since it uses less digits than its factorization.

74945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171.

The product of its digits is 5040, while the sum is 29.

The square root of 74945 is about 273.7608445341. The cubic root of 74945 is about 42.1613221227.

The spelling of 74945 in words is "seventy-four thousand, nine hundred forty-five".