86630645 has 4 divisors (see below), whose sum is σ = 103956780. Its totient is φ = 69304512.

The previous prime is 86630641. The next prime is 86630651. The reversal of 86630645 is 54603668.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64144081 + 22486564 = 8009^2 + 4742^2 .

It is a cyclic number.

It is not a de Polignac number, because 86630645 - 2² = 86630641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86630599 and 86630608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86630641) 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, 8663060 + ... + 8663069.

It is an arithmetic number, because the mean of its divisors is an integer number (25989195).

Almost surely, 2^86630645 is an apocalyptic number.

It is an amenable number.

86630645 is a deficient number, since it is larger than the sum of its proper divisors (17326135).

86630645 is a wasteful number, since it uses less digits than its factorization.

86630645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17326134.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 86630645 is about 9307.5584875949. The cubic root of 86630645 is about 442.4768115356.

The spelling of 86630645 in words is "eighty-six million, six hundred thirty thousand, six hundred forty-five".