75783147 has 16 divisors (see below), whose sum is σ = 111146880. Its totient is φ = 45926760.

The previous prime is 75783139. The next prime is 75783151. The reversal of 75783147 is 74138757.

It is a happy number.

It is not a de Polignac number, because 75783147 - 2³ = 75783139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75783099 and 75783108.

It is not an unprimeable number, because it can be changed into a prime (75783347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5497 + ... + 13482.

It is an arithmetic number, because the mean of its divisors is an integer number (6946680).

Almost surely, 2^75783147 is an apocalyptic number.

75783147 is a deficient number, since it is larger than the sum of its proper divisors (35363733).

75783147 is a wasteful number, since it uses less digits than its factorization.

75783147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19015 (or 18993 counting only the distinct ones).

The product of its digits is 164640, while the sum is 42.

The square root of 75783147 is about 8705.3516298884. The cubic root of 75783147 is about 423.1791013720.

The spelling of 75783147 in words is "seventy-five million, seven hundred eighty-three thousand, one hundred forty-seven".