85492640 has 24 divisors (see below), whose sum is σ = 201976740. Its totient is φ = 34196992.

The previous prime is 85492553. The next prime is 85492651. The reversal of 85492640 is 4629458.

It can be written as a sum of positive squares in 2 ways, for example, as 84419344 + 1073296 = 9188^2 + 1036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85492594 and 85492603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267005 + ... + 267324.

Almost surely, 2^85492640 is an apocalyptic number.

85492640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85492640 is an abundant number, since it is smaller than the sum of its proper divisors (116484100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85492640 is a wasteful number, since it uses less digits than its factorization.

85492640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534344 (or 534336 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 85492640 is about 9246.2230126685. The cubic root of 85492640 is about 440.5307644492.

The spelling of 85492640 in words is "eighty-five million, four hundred ninety-two thousand, six hundred forty".