83276779 has 4 divisors (see below), whose sum is σ = 84519784. Its totient is φ = 82033776.

The previous prime is 83276771. The next prime is 83276801. The reversal of 83276779 is 97767238.

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

It is a cyclic number.

It is not a de Polignac number, because 83276779 - 2³ = 83276771 is a prime.

It is a super-2 number, since 2×83276779² = 13870043841229682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83276771) 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, 621402 + ... + 621535.

It is an arithmetic number, because the mean of its divisors is an integer number (21129946).

Almost surely, 2^83276779 is an apocalyptic number.

83276779 is a deficient number, since it is larger than the sum of its proper divisors (1243005).

83276779 is a wasteful number, since it uses less digits than its factorization.

83276779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243004.

The product of its digits is 889056, while the sum is 49.

The square root of 83276779 is about 9125.6111576157. The cubic root of 83276779 is about 436.6914004857.

The spelling of 83276779 in words is "eighty-three million, two hundred seventy-six thousand, seven hundred seventy-nine".