77982367 has 4 divisors (see below), whose sum is σ = 78009256. Its totient is φ = 77955480.

The previous prime is 77982341. The next prime is 77982407. The reversal of 77982367 is 76328977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76328977 = 227 ⋅336251.

It is a cyclic number.

It is not a de Polignac number, because 77982367 - 2²³ = 69593759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77982367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77982337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8484 + ... + 15097.

It is an arithmetic number, because the mean of its divisors is an integer number (19502314).

Almost surely, 2^77982367 is an apocalyptic number.

77982367 is a deficient number, since it is larger than the sum of its proper divisors (26889).

77982367 is a wasteful number, since it uses less digits than its factorization.

77982367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26888.

The product of its digits is 889056, while the sum is 49.

The square root of 77982367 is about 8830.7625378559. The cubic root of 77982367 is about 427.2336692516.

The spelling of 77982367 in words is "seventy-seven million, nine hundred eighty-two thousand, three hundred sixty-seven".