78806797 has 8 divisors (see below), whose sum is σ = 80986752. Its totient is φ = 76639200.

The previous prime is 78806773. The next prime is 78806801. The reversal of 78806797 is 79760887.

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 78806797 - 2¹¹ = 78804749 is a prime.

It is a super-2 number, since 2×78806797² = 12421022506798418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78806197) 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, 10668 + ... + 16474.

It is an arithmetic number, because the mean of its divisors is an integer number (10123344).

Almost surely, 2^78806797 is an apocalyptic number.

It is an amenable number.

78806797 is a deficient number, since it is larger than the sum of its proper divisors (2179955).

78806797 is a wasteful number, since it uses less digits than its factorization.

78806797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 78806797 is about 8877.3192462590. The cubic root of 78806797 is about 428.7339667666.

The spelling of 78806797 in words is "seventy-eight million, eight hundred six thousand, seven hundred ninety-seven".