77676825 has 24 divisors (see below), whose sum is σ = 135982368. Its totient is φ = 38990080.

The previous prime is 77676821. The next prime is 77676857. The reversal of 77676825 is 52867677.

It is not a de Polignac number, because 77676825 - 2² = 77676821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77676821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29187 + ... + 31736.

It is an arithmetic number, because the mean of its divisors is an integer number (5665932).

Almost surely, 2^77676825 is an apocalyptic number.

77676825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77676825 is a deficient number, since it is larger than the sum of its proper divisors (58305543).

77676825 is a wasteful number, since it uses less digits than its factorization.

77676825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60953 (or 60948 counting only the distinct ones).

The product of its digits is 987840, while the sum is 48.

The square root of 77676825 is about 8813.4456939383. The cubic root of 77676825 is about 426.6749588097.

The spelling of 77676825 in words is "seventy-seven million, six hundred seventy-six thousand, eight hundred twenty-five".