85788877 has 4 divisors (see below), whose sum is σ = 87069376. Its totient is φ = 84508380.

The previous prime is 85788853. The next prime is 85788889. The reversal of 85788877 is 77888758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77888758 = 2 ⋅38944379.

It is a cyclic number.

It is not a de Polignac number, because 85788877 - 2¹⁹ = 85264589 is a prime.

It is a super-2 number, since 2×85788877² = 14719462833842258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85788847) 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, 640149 + ... + 640282.

It is an arithmetic number, because the mean of its divisors is an integer number (21767344).

Almost surely, 2^85788877 is an apocalyptic number.

It is an amenable number.

85788877 is a deficient number, since it is larger than the sum of its proper divisors (1280499).

85788877 is a wasteful number, since it uses less digits than its factorization.

85788877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280498.

The product of its digits is 7024640, while the sum is 58.

The square root of 85788877 is about 9262.2285115408. The cubic root of 85788877 is about 441.0389995042.

The spelling of 85788877 in words is "eighty-five million, seven hundred eighty-eight thousand, eight hundred seventy-seven".