77825612 has 6 divisors (see below), whose sum is σ = 136194828. Its totient is φ = 38912804.

The previous prime is 77825603. The next prime is 77825621. The reversal of 77825612 is 21652877.

It is an interprime number because it is at equal distance from previous prime (77825603) and next prime (77825621).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9728198 + ... + 9728205.

It is an arithmetic number, because the mean of its divisors is an integer number (22699138).

Almost surely, 2^77825612 is an apocalyptic number.

It is an amenable number.

77825612 is a deficient number, since it is larger than the sum of its proper divisors (58369216).

77825612 is a wasteful number, since it uses less digits than its factorization.

77825612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19456407 (or 19456405 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 77825612 is about 8821.8825655299. The cubic root of 77825612 is about 426.9472115983.

The spelling of 77825612 in words is "seventy-seven million, eight hundred twenty-five thousand, six hundred twelve".