78586653 has 16 divisors (see below), whose sum is σ = 109595520. Its totient is φ = 50089952.

The previous prime is 78586637. The next prime is 78586657. The reversal of 78586653 is 35668587.

It is not a de Polignac number, because 78586653 - 2⁴ = 78586637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78586657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35425 + ... + 37577.

It is an arithmetic number, because the mean of its divisors is an integer number (6849720).

Almost surely, 2^78586653 is an apocalyptic number.

It is an amenable number.

78586653 is a deficient number, since it is larger than the sum of its proper divisors (31008867).

78586653 is an equidigital number, since it uses as much as digits as its factorization.

78586653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225 (or 2179 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 78586653 is about 8864.9113362740. The cubic root of 78586653 is about 428.3343767312.

The spelling of 78586653 in words is "seventy-eight million, five hundred eighty-six thousand, six hundred fifty-three".