75781968 has 40 divisors (see below), whose sum is σ = 196612416. Its totient is φ = 25152000.

The previous prime is 75781967. The next prime is 75781969. The reversal of 75781968 is 86918757.

It is an interprime number because it is at equal distance from previous prime (75781967) and next prime (75781969).

It is a self number, because there is not a number n which added to its sum of digits gives 75781968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75781963) 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, 8293 + ... + 14843.

Almost surely, 2^75781968 is an apocalyptic number.

It is an amenable number.

75781968 is an abundant number, since it is smaller than the sum of its proper divisors (120830448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75781968 is a wasteful number, since it uses less digits than its factorization.

75781968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803 (or 6797 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The square root of 75781968 is about 8705.2839126590. The cubic root of 75781968 is about 423.1769068174.

The spelling of 75781968 in words is "seventy-five million, seven hundred eighty-one thousand, nine hundred sixty-eight".