78343835 has 4 divisors (see below), whose sum is σ = 94012608. Its totient is φ = 62675064.

The previous prime is 78343823. The next prime is 78343841. The reversal of 78343835 is 53834387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53834387 = 197 ⋅273271.

It is a cyclic number.

It is not a de Polignac number, because 78343835 - 2¹⁸ = 78081691 is a prime.

It is a super-2 number, since 2×78343835² = 12275512965014450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78343792 and 78343801.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7834379 + ... + 7834388.

It is an arithmetic number, because the mean of its divisors is an integer number (23503152).

Almost surely, 2^78343835 is an apocalyptic number.

78343835 is a deficient number, since it is larger than the sum of its proper divisors (15668773).

78343835 is a wasteful number, since it uses less digits than its factorization.

78343835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15668772.

The product of its digits is 241920, while the sum is 41.

The square root of 78343835 is about 8851.2052851575. The cubic root of 78343835 is about 427.8927639892.

The spelling of 78343835 in words is "seventy-eight million, three hundred forty-three thousand, eight hundred thirty-five".