77693077 has 48 divisors (see below), whose sum is σ = 106868160. Its totient is φ = 55641600.

The previous prime is 77693053. The next prime is 77693107. The reversal of 77693077 is 77039677.

It is a de Polignac number, because none of the positive numbers 2^k-77693077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77693017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 558874 + ... + 559012.

It is an arithmetic number, because the mean of its divisors is an integer number (2226420).

Almost surely, 2^77693077 is an apocalyptic number.

77693077 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

77693077 is a deficient number, since it is larger than the sum of its proper divisors (29175083).

77693077 is a wasteful number, since it uses less digits than its factorization.

77693077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 388962, while the sum is 46.

The square root of 77693077 is about 8814.3676460651. The cubic root of 77693077 is about 426.7047138787.

The spelling of 77693077 in words is "seventy-seven million, six hundred ninety-three thousand, seventy-seven".