77055739 has 4 divisors (see below), whose sum is σ = 79541440. Its totient is φ = 74570040.

The previous prime is 77055721. The next prime is 77055743. The reversal of 77055739 is 93755077.

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 77055739 - 2⁵ = 77055707 is a prime.

It is a super-2 number, since 2×77055739² = 11875173825672242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77055695 and 77055704.

It is not an unprimeable number, because it can be changed into a prime (77055709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242804 + ... + 1242865.

It is an arithmetic number, because the mean of its divisors is an integer number (19885360).

Almost surely, 2^77055739 is an apocalyptic number.

77055739 is a deficient number, since it is larger than the sum of its proper divisors (2485701).

77055739 is a wasteful number, since it uses less digits than its factorization.

77055739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485700.

The product of its (nonzero) digits is 231525, while the sum is 43.

The square root of 77055739 is about 8778.1398371181. The cubic root of 77055739 is about 425.5347161198.

The spelling of 77055739 in words is "seventy-seven million, fifty-five thousand, seven hundred thirty-nine".