78633801 has 16 divisors (see below), whose sum is σ = 116709120. Its totient is φ = 52326000.

The previous prime is 78633781. The next prime is 78633817. The reversal of 78633801 is 10833687.

It is not a de Polignac number, because 78633801 - 2⁷ = 78633673 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78633851) 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, 14176 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (7294320).

Almost surely, 2^78633801 is an apocalyptic number.

It is an amenable number.

78633801 is a deficient number, since it is larger than the sum of its proper divisors (38075319).

78633801 is a wasteful number, since it uses less digits than its factorization.

78633801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373 (or 5367 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 78633801 is about 8867.5701857950. The cubic root of 78633801 is about 428.4200192294.

It can be divided in two parts, 7863 and 3801, that added together give a square (11664 = 108²).

The spelling of 78633801 in words is "seventy-eight million, six hundred thirty-three thousand, eight hundred one".