78359785 has 16 divisors (see below), whose sum is σ = 110932992. Its totient is φ = 51998400.

The previous prime is 78359779. The next prime is 78359797. The reversal of 78359785 is 58795387.

It is not a de Polignac number, because 78359785 - 2⁷ = 78359657 is a prime.

It is a super-2 number, since 2×78359785² = 12280511810492450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35026 + ... + 37195.

It is an arithmetic number, because the mean of its divisors is an integer number (6933312).

Almost surely, 2^78359785 is an apocalyptic number.

It is an amenable number.

78359785 is a deficient number, since it is larger than the sum of its proper divisors (32573207).

78359785 is a wasteful number, since it uses less digits than its factorization.

78359785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72264.

The product of its digits is 2116800, while the sum is 52.

The square root of 78359785 is about 8852.1062465382. The cubic root of 78359785 is about 427.9218002092.

The spelling of 78359785 in words is "seventy-eight million, three hundred fifty-nine thousand, seven hundred eighty-five".