83777906 has 8 divisors (see below), whose sum is σ = 126626544. Its totient is φ = 41569060.

The previous prime is 83777899. The next prime is 83777909. The reversal of 83777906 is 60977738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (83777909) 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, 159620 + ... + 160143.

It is an arithmetic number, because the mean of its divisors is an integer number (15828318).

Almost surely, 2^83777906 is an apocalyptic number.

83777906 is a deficient number, since it is larger than the sum of its proper divisors (42848638).

83777906 is a wasteful number, since it uses less digits than its factorization.

83777906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319896.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 83777906 is about 9153.0271495282. The cubic root of 83777906 is about 437.5655951715.

The spelling of 83777906 in words is "eighty-three million, seven hundred seventy-seven thousand, nine hundred six".