83778267 has 4 divisors (see below), whose sum is σ = 111704360. Its totient is φ = 55852176.

The previous prime is 83778263. The next prime is 83778269. The reversal of 83778267 is 76287738.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83778267 - 2² = 83778263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83778263) 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, 13963042 + ... + 13963047.

It is an arithmetic number, because the mean of its divisors is an integer number (27926090).

Almost surely, 2^83778267 is an apocalyptic number.

83778267 is a deficient number, since it is larger than the sum of its proper divisors (27926093).

83778267 is a wasteful number, since it uses less digits than its factorization.

83778267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27926092.

The product of its digits is 790272, while the sum is 48.

The square root of 83778267 is about 9153.0468697587. The cubic root of 83778267 is about 437.5662236624.

The spelling of 83778267 in words is "eighty-three million, seven hundred seventy-eight thousand, two hundred sixty-seven".