78808801 has 4 divisors (see below), whose sum is σ = 80485632. Its totient is φ = 77131972.

The previous prime is 78808777. The next prime is 78808811. The reversal of 78808801 is 10880887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10880887 = 29 ⋅375203.

It is a cyclic number.

It is not a de Polignac number, because 78808801 - 2⁷ = 78808673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78808811) 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, 838345 + ... + 838438.

It is an arithmetic number, because the mean of its divisors is an integer number (20121408).

Almost surely, 2^78808801 is an apocalyptic number.

It is an amenable number.

78808801 is a deficient number, since it is larger than the sum of its proper divisors (1676831).

78808801 is a wasteful number, since it uses less digits than its factorization.

78808801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676830.

The product of its (nonzero) digits is 28672, while the sum is 40.

The square root of 78808801 is about 8877.4321174538. The cubic root of 78808801 is about 428.7376008677.

The spelling of 78808801 in words is "seventy-eight million, eight hundred eight thousand, eight hundred one".