77135505 has 16 divisors (see below), whose sum is σ = 127673280. Its totient is φ = 39720128.

The previous prime is 77135453. The next prime is 77135519. The reversal of 77135505 is 50553177.

It is a cyclic number.

It is not a de Polignac number, because 77135505 - 2¹⁴ = 77119121 is a prime.

It is a super-2 number, since 2×77135505² = 11899772263210050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88227 + ... + 89096.

It is an arithmetic number, because the mean of its divisors is an integer number (7979580).

Almost surely, 2^77135505 is an apocalyptic number.

It is an amenable number.

77135505 is a deficient number, since it is larger than the sum of its proper divisors (50537775).

77135505 is a wasteful number, since it uses less digits than its factorization.

77135505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177360.

The product of its (nonzero) digits is 18375, while the sum is 33.

The square root of 77135505 is about 8782.6821074203. The cubic root of 77135505 is about 425.6814994612.

The spelling of 77135505 in words is "seventy-seven million, one hundred thirty-five thousand, five hundred five".