85297620 has 24 divisors (see below), whose sum is σ = 238833504. Its totient is φ = 22746016.

The previous prime is 85297603. The next prime is 85297627. The reversal of 85297620 is 2679258.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85297627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710754 + ... + 710873.

It is an arithmetic number, because the mean of its divisors is an integer number (9951396).

Almost surely, 2^85297620 is an apocalyptic number.

It is an amenable number.

85297620 is an abundant number, since it is smaller than the sum of its proper divisors (153535884).

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

85297620 is a wasteful number, since it uses less digits than its factorization.

85297620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421639 (or 1421637 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 85297620 is about 9235.6710638697. The cubic root of 85297620 is about 440.1955398093.

The spelling of 85297620 in words is "eighty-five million, two hundred ninety-seven thousand, six hundred twenty".