78353867 has 8 divisors (see below), whose sum is σ = 83081376. Its totient is φ = 73639552.

The previous prime is 78353857. The next prime is 78353897. The reversal of 78353867 is 76835387.

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 78353867 - 2¹² = 78349771 is a prime.

It is a super-2 number, since 2×78353867² = 12278656947707378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78353837) 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, 10658 + ... + 16440.

It is an arithmetic number, because the mean of its divisors is an integer number (10385172).

Almost surely, 2^78353867 is an apocalyptic number.

78353867 is a deficient number, since it is larger than the sum of its proper divisors (4727509).

78353867 is a wasteful number, since it uses less digits than its factorization.

78353867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6597.

The product of its digits is 846720, while the sum is 47.

The square root of 78353867 is about 8851.7719694985. The cubic root of 78353867 is about 427.9110272301.

The spelling of 78353867 in words is "seventy-eight million, three hundred fifty-three thousand, eight hundred sixty-seven".