86938645 has 8 divisors (see below), whose sum is σ = 104425560. Its totient is φ = 69484800.

The previous prime is 86938639. The next prime is 86938711. The reversal of 86938645 is 54683968.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15062161 + 71876484 = 3881^2 + 8478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86938645 - 2³ = 86938637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056 + ... + 13345.

It is an arithmetic number, because the mean of its divisors is an integer number (13053195).

Almost surely, 2^86938645 is an apocalyptic number.

It is an amenable number.

86938645 is a deficient number, since it is larger than the sum of its proper divisors (17486915).

86938645 is a wasteful number, since it uses less digits than its factorization.

86938645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16535.

The product of its digits is 1244160, while the sum is 49.

The square root of 86938645 is about 9324.0894997850. The cubic root of 86938645 is about 443.0005740998. Note that the first 3 decimals are identical.

The spelling of 86938645 in words is "eighty-six million, nine hundred thirty-eight thousand, six hundred forty-five".