75485978 has 8 divisors (see below), whose sum is σ = 113565972. Its totient is φ = 37630656.

The previous prime is 75485959. The next prime is 75485981. The reversal of 75485978 is 87958457.

It can be written as a sum of positive squares in 2 ways, for example, as 72199009 + 3286969 = 8497^2 + 1813^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55325 + ... + 56672.

Almost surely, 2^75485978 is an apocalyptic number.

75485978 is a deficient number, since it is larger than the sum of its proper divisors (38079994).

75485978 is a wasteful number, since it uses less digits than its factorization.

75485978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112336.

The product of its digits is 2822400, while the sum is 53.

The square root of 75485978 is about 8688.2666855939. The cubic root of 75485978 is about 422.6252383651.

The spelling of 75485978 in words is "seventy-five million, four hundred eighty-five thousand, nine hundred seventy-eight".