78870973 has 8 divisors (see below), whose sum is σ = 84025728. Its totient is φ = 73773504.

The previous prime is 78870941. The next prime is 78870997. The reversal of 78870973 is 37907887.

It is a happy number.

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 78870973 - 2⁵ = 78870941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78870073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11461 + ... + 17002.

It is an arithmetic number, because the mean of its divisors is an integer number (10503216).

Almost surely, 2^78870973 is an apocalyptic number.

It is an amenable number.

78870973 is a deficient number, since it is larger than the sum of its proper divisors (5154755).

78870973 is a wasteful number, since it uses less digits than its factorization.

78870973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28643.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 78870973 is about 8880.9331153883. The cubic root of 78870973 is about 428.8503144537.

The spelling of 78870973 in words is "seventy-eight million, eight hundred seventy thousand, nine hundred seventy-three".