77693147 has 16 divisors (see below), whose sum is σ = 95059200. Its totient is φ = 62013600.

The previous prime is 77693123. The next prime is 77693153. The reversal of 77693147 is 74139677.

It is a cyclic number.

It is not a de Polignac number, because 77693147 - 2⁸ = 77692891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77693098 and 77693107.

It is not an unprimeable number, because it can be changed into a prime (77693107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2897 + ... + 12797.

It is an arithmetic number, because the mean of its divisors is an integer number (5941200).

Almost surely, 2^77693147 is an apocalyptic number.

77693147 is a deficient number, since it is larger than the sum of its proper divisors (17366053).

77693147 is a wasteful number, since it uses less digits than its factorization.

77693147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9986.

The product of its digits is 222264, while the sum is 44.

The square root of 77693147 is about 8814.3716168539. The cubic root of 77693147 is about 426.7048420296.

The spelling of 77693147 in words is "seventy-seven million, six hundred ninety-three thousand, one hundred forty-seven".