86897513 has 4 divisors (see below), whose sum is σ = 87041280. Its totient is φ = 86753748.

The previous prime is 86897509. The next prime is 86897533. The reversal of 86897513 is 31579868.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86897513 - 2² = 86897509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86897533) 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, 70973 + ... + 72186.

It is an arithmetic number, because the mean of its divisors is an integer number (21760320).

Almost surely, 2^86897513 is an apocalyptic number.

It is an amenable number.

86897513 is a deficient number, since it is larger than the sum of its proper divisors (143767).

86897513 is a wasteful number, since it uses less digits than its factorization.

86897513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143766.

The product of its digits is 362880, while the sum is 47.

The square root of 86897513 is about 9321.8835543038. The cubic root of 86897513 is about 442.9306996346.

The spelling of 86897513 in words is "eighty-six million, eight hundred ninety-seven thousand, five hundred thirteen".