85647740 has 24 divisors (see below), whose sum is σ = 180048960. Its totient is φ = 34223168.

The previous prime is 85647719. The next prime is 85647743. The reversal of 85647740 is 4774658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85647743) 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, 25901 + ... + 29019.

It is an arithmetic number, because the mean of its divisors is an integer number (7502040).

Almost surely, 2^85647740 is an apocalyptic number.

It is an amenable number.

85647740 is an abundant number, since it is smaller than the sum of its proper divisors (94401220).

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

85647740 is a wasteful number, since it uses less digits than its factorization.

85647740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501 (or 4499 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 85647740 is about 9254.6064205886. The cubic root of 85647740 is about 440.7970058635.

The spelling of 85647740 in words is "eighty-five million, six hundred forty-seven thousand, seven hundred forty".