83867638 has 4 divisors (see below), whose sum is σ = 125801460. Its totient is φ = 41933818.

The previous prime is 83867633. The next prime is 83867639. The reversal of 83867638 is 83676838.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 83867591 and 83867600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83867633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20966908 + ... + 20966911.

It is an arithmetic number, because the mean of its divisors is an integer number (31450365).

Almost surely, 2^83867638 is an apocalyptic number.

83867638 is a deficient number, since it is larger than the sum of its proper divisors (41933822).

83867638 is a wasteful number, since it uses less digits than its factorization.

83867638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41933821.

The product of its digits is 1161216, while the sum is 49.

The square root of 83867638 is about 9157.9276039943. The cubic root of 83867638 is about 437.7217605543.

The spelling of 83867638 in words is "eighty-three million, eight hundred sixty-seven thousand, six hundred thirty-eight".