77775011 has 4 divisors (see below), whose sum is σ = 77880432. Its totient is φ = 77669592.

The previous prime is 77774987. The next prime is 77775023. The reversal of 77775011 is 11057777.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77775011 - 2¹⁰ = 77773987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77778011) 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, 51596 + ... + 53081.

It is an arithmetic number, because the mean of its divisors is an integer number (19470108).

Almost surely, 2^77775011 is an apocalyptic number.

77775011 is a deficient number, since it is larger than the sum of its proper divisors (105421).

77775011 is a wasteful number, since it uses less digits than its factorization.

77775011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105420.

The product of its (nonzero) digits is 12005, while the sum is 35.

The square root of 77775011 is about 8819.0141739312. The cubic root of 77775011 is about 426.8546600625.

The spelling of 77775011 in words is "seventy-seven million, seven hundred seventy-five thousand, eleven".