83378166 has 16 divisors (see below), whose sum is σ = 176565744. Its totient is φ = 26157824.

The previous prime is 83378159. The next prime is 83378173. The reversal of 83378166 is 66187338.

It is an interprime number because it is at equal distance from previous prime (83378159) and next prime (83378173).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408615 + ... + 408818.

It is an arithmetic number, because the mean of its divisors is an integer number (11035359).

Almost surely, 2^83378166 is an apocalyptic number.

83378166 is an abundant number, since it is smaller than the sum of its proper divisors (93187578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83378166 is a wasteful number, since it uses less digits than its factorization.

83378166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817455.

The product of its digits is 145152, while the sum is 42.

The square root of 83378166 is about 9131.1645478548. The cubic root of 83378166 is about 436.8685482090.

The spelling of 83378166 in words is "eighty-three million, three hundred seventy-eight thousand, one hundred sixty-six".