78499827 has 16 divisors (see below), whose sum is σ = 132910080. Its totient is φ = 44856936.

The previous prime is 78499793. The next prime is 78499831. The reversal of 78499827 is 72899487.

78499827 is a `hidden beast` number, since 78 + 499 + 82 + 7 = 666.

It is not a de Polignac number, because 78499827 - 2⁶ = 78499763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78499847) 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, 207483 + ... + 207860.

It is an arithmetic number, because the mean of its divisors is an integer number (8306880).

Almost surely, 2^78499827 is an apocalyptic number.

78499827 is a deficient number, since it is larger than the sum of its proper divisors (54410253).

78499827 is a wasteful number, since it uses less digits than its factorization.

78499827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415359 (or 415353 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 78499827 is about 8860.0128103745. The cubic root of 78499827 is about 428.1765710302.

The spelling of 78499827 in words is "seventy-eight million, four hundred ninety-nine thousand, eight hundred twenty-seven".