83785078 has 16 divisors (see below), whose sum is σ = 143307360. Its totient is φ = 36395136.

The previous prime is 83785073. The next prime is 83785127. The reversal of 83785078 is 87058738.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83785073) 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, 94338 + ... + 95221.

It is an arithmetic number, because the mean of its divisors is an integer number (8956710).

Almost surely, 2^83785078 is an apocalyptic number.

83785078 is a deficient number, since it is larger than the sum of its proper divisors (59522282).

83785078 is a wasteful number, since it uses less digits than its factorization.

83785078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189591.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 83785078 is about 9153.4189240961. The cubic root of 83785078 is about 437.5780810844.

It can be divided in two parts, 8378 and 5078, that added together give a square (13456 = 116²).

The spelling of 83785078 in words is "eighty-three million, seven hundred eighty-five thousand, seventy-eight".