77893057 has 4 divisors (see below), whose sum is σ = 84974256. Its totient is φ = 70811860.

The previous prime is 77893051. The next prime is 77893069. The reversal of 77893057 is 75039877.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77893057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77892998 and 77893016.

It is not an unprimeable number, because it can be changed into a prime (77893051) 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 3 ways as a sum of consecutive naturals, for example, 3540583 + ... + 3540604.

It is an arithmetic number, because the mean of its divisors is an integer number (21243564).

Almost surely, 2^77893057 is an apocalyptic number.

It is an amenable number.

77893057 is a deficient number, since it is larger than the sum of its proper divisors (7081199).

77893057 is a wasteful number, since it uses less digits than its factorization.

77893057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7081198.

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 77893057 is about 8825.7043344993. The cubic root of 77893057 is about 427.0705092280.

The spelling of 77893057 in words is "seventy-seven million, eight hundred ninety-three thousand, fifty-seven".