597640086 has 64 divisors (see below), whose sum is σ = 1361525760. Its totient is φ = 194261760.

The previous prime is 597640081. The next prime is 597640111. The reversal of 597640086 is 680046795.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (597640081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371095 + ... + 372701.

It is an arithmetic number, because the mean of its divisors is an integer number (21273840).

Almost surely, 2^597640086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 597640086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680762880).

597640086 is an abundant number, since it is smaller than the sum of its proper divisors (763885674).

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

597640086 is a wasteful number, since it uses less digits than its factorization.

597640086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 597640086 is about 24446.6784246858. The cubic root of 597640086 is about 842.3254187184.

The spelling of 597640086 in words is "five hundred ninety-seven million, six hundred forty thousand, eighty-six".