83688810 has 16 divisors (see below), whose sum is σ = 200853216. Its totient is φ = 22317008.

The previous prime is 83688799. The next prime is 83688821. The reversal of 83688810 is 1888638.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (83688799) and next prime (83688821).

It is a super-2 number, since 2×83688810² = 14007633838432200, which contains 22 as substring.

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, 1394784 + ... + 1394843.

It is an arithmetic number, because the mean of its divisors is an integer number (12553326).

Almost surely, 2^83688810 is an apocalyptic number.

83688810 is an abundant number, since it is smaller than the sum of its proper divisors (117164406).

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

83688810 is a wasteful number, since it uses less digits than its factorization.

83688810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789637.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 83688810 is about 9148.1588311529. The cubic root of 83688810 is about 437.4104262878.

The spelling of 83688810 in words is "eighty-three million, six hundred eighty-eight thousand, eight hundred ten".