78653241 has 8 divisors (see below), whose sum is σ = 116523360. Its totient is φ = 52435476.

The previous prime is 78653233. The next prime is 78653251. The reversal of 78653241 is 14235687.

78653241 is a `hidden beast` number, since 7 + 86 + 532 + 41 = 666.

It is not a de Polignac number, because 78653241 - 2³ = 78653233 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78653196 and 78653205.

It is not an unprimeable number, because it can be changed into a prime (78653221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456515 + ... + 1456568.

It is an arithmetic number, because the mean of its divisors is an integer number (14565420).

Almost surely, 2^78653241 is an apocalyptic number.

It is an amenable number.

78653241 is a deficient number, since it is larger than the sum of its proper divisors (37870119).

78653241 is a wasteful number, since it uses less digits than its factorization.

78653241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913092 (or 2913086 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 78653241 is about 8868.6662469618. Note that the first 3 decimals coincide. The cubic root of 78653241 is about 428.4553212617.

The spelling of 78653241 in words is "seventy-eight million, six hundred fifty-three thousand, two hundred forty-one".