77506027 has 4 divisors (see below), whose sum is σ = 77830560. Its totient is φ = 77181496.

The previous prime is 77506003. The next prime is 77506049. The reversal of 77506027 is 72060577.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72060577 = 67 ⋅1075531.

It is a cyclic number.

It is not a de Polignac number, because 77506027 - 2¹⁵ = 77473259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77505983 and 77506001.

It is not an unprimeable number, because it can be changed into a prime (77506057) 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, 161908 + ... + 162385.

It is an arithmetic number, because the mean of its divisors is an integer number (19457640).

Almost surely, 2^77506027 is an apocalyptic number.

77506027 is a deficient number, since it is larger than the sum of its proper divisors (324533).

77506027 is a wasteful number, since it uses less digits than its factorization.

77506027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324532.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 77506027 is about 8803.7507347721. The cubic root of 77506027 is about 426.3620009945.

The spelling of 77506027 in words is "seventy-seven million, five hundred six thousand, twenty-seven".