78651233 has 8 divisors (see below), whose sum is σ = 81985152. Its totient is φ = 75380976.

The previous prime is 78651229. The next prime is 78651259. The reversal of 78651233 is 33215687.

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

It is a cyclic number.

It is not a de Polignac number, because 78651233 - 2² = 78651229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78651193 and 78651202.

It is not an unprimeable number, because it can be changed into a prime (78651533) 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, 13385 + ... + 18342.

It is an arithmetic number, because the mean of its divisors is an integer number (10248144).

Almost surely, 2^78651233 is an apocalyptic number.

It is an amenable number.

78651233 is a deficient number, since it is larger than the sum of its proper divisors (3333919).

78651233 is a wasteful number, since it uses less digits than its factorization.

78651233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31831.

The product of its digits is 30240, while the sum is 35.

The square root of 78651233 is about 8868.5530386868. The cubic root of 78651233 is about 428.4516751072.

The spelling of 78651233 in words is "seventy-eight million, six hundred fifty-one thousand, two hundred thirty-three".