86578097 has 4 divisors (see below), whose sum is σ = 88211700. Its totient is φ = 84944496.

The previous prime is 86578091. The next prime is 86578103. The reversal of 86578097 is 79087568.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (86578091) and next prime (86578103).

It can be written as a sum of positive squares in 2 ways, for example, as 22193521 + 64384576 = 4711^2 + 8024^2 .

It is a cyclic number.

It is not a de Polignac number, because 86578097 - 2⁶ = 86578033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86578091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816722 + ... + 816827.

It is an arithmetic number, because the mean of its divisors is an integer number (22052925).

Almost surely, 2^86578097 is an apocalyptic number.

It is an amenable number.

86578097 is a deficient number, since it is larger than the sum of its proper divisors (1633603).

86578097 is a wasteful number, since it uses less digits than its factorization.

86578097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633602.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 86578097 is about 9304.7351923631. The cubic root of 86578097 is about 442.3873282883.

The spelling of 86578097 in words is "eighty-six million, five hundred seventy-eight thousand, ninety-seven".