85377634 has 4 divisors (see below), whose sum is σ = 128066454. Its totient is φ = 42688816.

The previous prime is 85377601. The next prime is 85377667. The reversal of 85377634 is 43677358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43677358 = 2 ⋅21838679.

It is an interprime number because it is at equal distance from previous prime (85377601) and next prime (85377667).

It can be written as a sum of positive squares in only one way, i.e., 83777409 + 1600225 = 9153^2 + 1265^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21344407 + ... + 21344410.

Almost surely, 2^85377634 is an apocalyptic number.

85377634 is a deficient number, since it is larger than the sum of its proper divisors (42688820).

85377634 is a wasteful number, since it uses less digits than its factorization.

85377634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42688819.

The product of its digits is 423360, while the sum is 43.

The square root of 85377634 is about 9240.0018398267. The cubic root of 85377634 is about 440.3331395779. Note that the first 3 decimals are identical.

It can be divided in two parts, 853 and 77634, that added together give a palindrome (78487).

The spelling of 85377634 in words is "eighty-five million, three hundred seventy-seven thousand, six hundred thirty-four".