77422085 has 8 divisors (see below), whose sum is σ = 100053240. Its totient is φ = 57173184.

The previous prime is 77422067. The next prime is 77422087. The reversal of 77422085 is 58022477.

It can be written as a sum of positive squares in 4 ways, for example, as 4456321 + 72965764 = 2111^2 + 8542^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77422085 - 2¹⁸ = 77159941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77422087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595490 + ... + 595619.

It is an arithmetic number, because the mean of its divisors is an integer number (12506655).

Almost surely, 2^77422085 is an apocalyptic number.

It is an amenable number.

77422085 is a deficient number, since it is larger than the sum of its proper divisors (22631155).

77422085 is a wasteful number, since it uses less digits than its factorization.

77422085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191127.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 77422085 is about 8798.9820433957. The cubic root of 77422085 is about 426.2080232597.

The spelling of 77422085 in words is "seventy-seven million, four hundred twenty-two thousand, eighty-five".