75780478 has 8 divisors (see below), whose sum is σ = 113742360. Its totient is φ = 37866360.

The previous prime is 75780457. The next prime is 75780479. The reversal of 75780478 is 87408757.

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 (75780479) 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, 7668 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (14217795).

Almost surely, 2^75780478 is an apocalyptic number.

75780478 is a deficient number, since it is larger than the sum of its proper divisors (37961882).

75780478 is a wasteful number, since it uses less digits than its factorization.

75780478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23882.

The product of its (nonzero) digits is 439040, while the sum is 46.

The square root of 75780478 is about 8705.1983320313. The cubic root of 75780478 is about 423.1741333444.

The spelling of 75780478 in words is "seventy-five million, seven hundred eighty thousand, four hundred seventy-eight".