78080837 has 4 divisors (see below), whose sum is σ = 81475680. Its totient is φ = 74685996.

The previous prime is 78080833. The next prime is 78080869. The reversal of 78080837 is 73808087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73808087 = 257 ⋅287191.

It is a cyclic number.

It is not a de Polignac number, because 78080837 - 2² = 78080833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78080794 and 78080803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78080831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697387 + ... + 1697432.

It is an arithmetic number, because the mean of its divisors is an integer number (20368920).

Almost surely, 2^78080837 is an apocalyptic number.

It is an amenable number.

78080837 is a deficient number, since it is larger than the sum of its proper divisors (3394843).

78080837 is a wasteful number, since it uses less digits than its factorization.

78080837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394842.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 78080837 is about 8836.3361751350. The cubic root of 78080837 is about 427.4134193071.

The spelling of 78080837 in words is "seventy-eight million, eighty thousand, eight hundred thirty-seven".