78813573 has 8 divisors (see below), whose sum is σ = 105201600. Its totient is φ = 52483968.

The previous prime is 78813569. The next prime is 78813583. The reversal of 78813573 is 37531887.

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

It is not a de Polignac number, because 78813573 - 2² = 78813569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78813523) 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, 11353 + ... + 16926.

It is an arithmetic number, because the mean of its divisors is an integer number (13150200).

Almost surely, 2^78813573 is an apocalyptic number.

It is an amenable number.

78813573 is a deficient number, since it is larger than the sum of its proper divisors (26388027).

78813573 is a wasteful number, since it uses less digits than its factorization.

78813573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29211.

The product of its digits is 141120, while the sum is 42.

The square root of 78813573 is about 8877.7008848012. The cubic root of 78813573 is about 428.7462542774.

The spelling of 78813573 in words is "seventy-eight million, eight hundred thirteen thousand, five hundred seventy-three".